Sorry this post was made by my brother using my account, its all sorted now he stayed up till 1 oclock last night until he finally managed to uninstall it, it serves him right for thinking you can get free software from the internet.
I believe the problem was that the program was using up far too muck CPU power, every time the CPU usage hit 100% explorer.exe would reboot causing anything he was trying to start up to cancel, this happened about every 10 seconds from what i hear and trying to start a program only used more CPU power.
he bought himself time by ending all the McAfee processes and using the short amount of time before they started up again to uninstall the program. Please do not think that i download illegal software as i am highly against using computers to break the law