HP Vectra VL400:

As you can see it lays flat on the ground like a vcr. lol. Many moronic friends of mine told me I could'nt change the case on this pc but I than decided to take my pc to a store and let a pro look at it anyway. I told him the exact case I wanted (he is actually selling the case at the same store right now).
This is the case:
(CD-TK8600 Ivory & Black w/ 350w power supply $45.00 Canadian)
http://www.task.com.tw/tk8600.htm
He looked at the inside of my "HP Vectra VL400", and examined the back of my pc:
Back of my HP Vectra VL400:

And said the long awaited words I had been waiting to hear. That it was POSSIBLE to change the case to the one I want! He said it can be done but that all I need is one thing. He said I would need some sort of fan for the pc... Umm that's where my questions begin. Here look, I'm going to show you. Examine the following pics of the inside of my pc. And take a good look at the power supply unit and how theres a black thing covering it. He said something about needing to buy a fan to cool the processor or something, for once everything is taken out of my HP and put in the other case. Because he said that the power supply unit in my HP has a custom built cooling method or box or whatever (that black thing in the pics covering the processor), that goes to cool my processor, etc. He said it's like a custom vent that HP made using the psu. But he said that my pc can still go into a new case. So take a good look at the following pics, examine my system, and you will see what I mean.
Inside my HP Vectra VL400:





Now he never got to the point as in what type of cooler, or fan, etc. And where to put it, place it, screw it on location in the box, or rest it. I took it to a next pc store and the dude did the same thing. After I had asked both men said they would charge me 35 dollars to change the cases for me, and not to worry about it. That they would take care of it. And they dropped the coversation there as to not give me a hint on what I would need or how I can do it myself. They did this because they obviously want money. Sure I said! Ya Right! I don't want to get ripped off. & that's why I'm asking you guys. I know I'm capable of changing the cases on my own with the knowledge I have learned so far. & Since I don't know this part of my personal process, I wanted to ask you all to see if you could tell me so I can buy the exact fan/cooler I need to, and do it myself. (the cheapest one, or type prefered! - You dont have to tell me an exact brand name etc. As long as it's like a universal type I can find at any pc store anywhere for cheap). So heres the first question.
What type of fan/cooler will I need to replace the custom cooling that is in my HP when I change cases, and where should it go/be screwed onto?
By the way I have two or three places to connect a fan (from what they said at the store). Which I asked them to point out before so. Here are the pics of that, and the descriptions of what it says next to the connections on my motherboard, and how many pins the connection has:



Are any of these relevant? I'm sure one of these is where I'm supposed to connect whatever it is I'm supposed to buy.
See I know how to do and put in the following devices in a case:
- A hard drive
- A floppy drive
- an optical cd drive
- Pci and Agp cards
- Pentium chip
- The metal thing that goes over the chip. with tall pointy things all over it
etc.
The only things I don't know how to do is put in a power supply and how to plug the new reset and power plug wires onto a motherboard. Some people say its simple. But I don't know if I'm gonna need adapters or anything to covert a plug. lol. I'm thinking like this is me heading over to europe with an american beard shaver trying to put it in the wall and using a special plug adapter. lol. The new case comes with a 350watt psu. Well here is a brief description of my main power supply connection on my motherboard, (that comes straight out of the psu and feeds right into my mobo).
Psu to mobo 1:

Psu to mobo 2:

& last but not least here is the reset wires and plugs to my mobo:

What am I supposed to buy other than the new case (that comes with a 350watt psu)? Any adapters for the resest buttons? Any extra plugs in case the reset wires dont fit?
If you need to know my motherboard in full detail look for the model "HP Vectra VL400" manual. In the manuals section of the hp website. And look at the pdf file diagrams. In order to give me more details you know?
& also look at the new case I want and its specs and diagram here:
(CD-TK8600 Ivory & Black w/ 350w power supply $45.00 Canadian)
http://www.task.com.tw/tk8600.htm
If there is anything I need to know please tell me. Any and all information from as many people will help. I will look at it all. Please help me so I can go get this new case. I have been waiting for it for a long time. Let me know what I need with the new case other than the case and the 350watt psu provided. I dont want to get ripped off by the store keeper for expensive things I probably dont need.
And please let me know where I will have to connect the new fan or accessory i need and where i can screw it on. According to the details I have given you in the pics of the pin/fan/whatever connections they showed me.
And can someone tell me if the power supply will work on my new mobo. I'm thinking it will because its ages newer. and the store guy said it would.
If I need any sort of adapters for reset buttons etc. anything let me know.
ALL INFORMATION IS WELCOME. THANK YOU ALL FOR YOUR DEDICATION AND TIME!
AND FOR THE RECORD THE PC STORE CLERK SAID MY MOTHERBOARD IS FINE AND IT WILL FIT IN THAT SMALL NEW BOX. (theres two of them, the small new case, and a bigger version of the new case). He only has the smaller one though! lol.
Is any of this needed or are they just trying to rip me off? Do I just need the case and that's all?