Hmmm... There's nothing specific on the link that says what programs are on the disk... Also it's suspicious to me that he claims it's a "catch all" cure disk. This says it could do practically anything that could be wrong, reminds me of snake oil.
Very probably there's a bunch of free programs on there. Possibly some could be helpful, but we can't know since we don't have a list of what they are - likely on purpose. He says they're all GNU License, so that would make them freeware and illegal for him to be selling them - particularly as he's likely not the person who wrote them. At least they're not expensive.

No problem, we shouldn't need it anyway.
First question: Have you tried keystrokes in regular windows? Try
Windows Key+
R. Does a run dialog pop up? Probably won't but doesn't hurt to check.
Next question: Have you tried booting into safe mode? If so, does it work where the desktop doesn't?
If not, I believe Sony Vaios boot into safe mode with F8. When you reboot, wait for the BIOS splash screen to come up (the very first image you see on reboot) and start pressing F8 repeatedly (every second or so). A black screen with text should come up asking if you want to boot into safe mode, safe mode with networking, etc...
If that doesn't bring up safe mode boot options, reboot again and get a look at that very first screen - it should have text across the bottom that tells you what key to press to get into safe mode. Sometimes it;s the escape key, or F2, or it could be something else. Try again using the button it tells you.
I'm assuming you're getting here via another computer? If so, download XP Recovery Console
Here. It's an ISO, a bootable disk image. You'll need to burn it with a program that can burn bootable ISOs, such as Nero.
If you don't have one, this is recommended by Broni:
use ImgBurn: http://www.imgburn.com/ to burn .iso file to a CD (select "Write image file to disc" option), and make the CD bootable.
We may not need this, but then again it's good to get it done just in case. And it can be helpful to you if you ever need it again.

Let us know if you can get into safe mode and if it works, and we'll go from there.