right in my start up there is something called

SiS Windows KeyHook in
C:\Windows\system32\keyhook.exe

is that supposed to be there or should i disable it from starting up when my PC logs on?

http://pcpitstop.com/spycheck/SWDetail.asp?fn=keyhook.exe

Vendor contains:    Silicon Integrated Systems
Product contains:    SIS Super VGA keyboard daemon

Recommendation

Usually should not be disabled. See below for more information.
To get control over your running programs we suggest WinTasks 5 Pro
Purpose

Keyhook.exe is used to allow multimedia keys on Acer multimedia keyboards to function correctly. If you stop this process all of the 'normal' keys on the keyboard should still function, but the multimedia keys will not. Only stop this process if it is causing instability to your system.

Thanks the title just threw me a bit as im doing my every so often checks for my PC.

Thanks

good thing to be doing. You're quite welcome

i get a comand promp that sasy cmd.exe, it think it is i have to restar to see the exact name but it just comes and then goes out 

cmd.exe is just the command prompt executable

but why does it show at start up? and it shows on other users too but it gives error

start > run > msconfig > startup tab. investigate the list. If you want, PM me a Hijack This log and I'll look at it for you

k give me untill tomorow cus ima go to bed thanks anyway