:disagree:, you have no spyware.
The thing you should really watch out for isn't the evil nerd in the basement ten blocks away, or the evil advertising site you absent mindedly click on.
Its one of your friends most probably. the old keystroke prank is the most annoying one in the book, but is simple to solve.
If it is made by JL Software, then you can solve it by moving the mouse into the top left hand corner of the screen, and this should result in a window popping up allowing you to exit.
I have no experience of this sort of program being made by any other company, because JL are stopping the distribution of it due to it looking remarkably like spyware.
if you still have problems, then the only spyware thwarting apparatus to date that deals with annoying pricks installing it from a floppy disk while you make the coffee is Drum roll Pest Patrol!!! Google it!!!.
And also, if you get the time, and your pc doesnt carry on pissing you off, get back to me on this one, coz this is the sort of thing i like doing (sad maybe, anally retented, definitely!)