
The Sysai folder is from Apropos spyware and can be deleted completely.
param32.dll will be a bit more difficult.
Copy the part in bold below into notepad and save it as param.reg
REGEDIT4
[-HKEY_CLASSES_ROOT\CLSID\{D56A1203-1452-EBA1-7294-EE3377770000}]
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\SharedTaskScheduler]
"{D56A1203-1452-EBA1-7294-EE3377770000}"=-
[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\batfile\shell\open\command]
@="\"%1\" %*"
Then have HijackThis fix:
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.newgenlook.info/ad/ad0278/
Then reboot and you should be able to delete the file.
Let me know.
Regards,
Pieter