you have a point, ill lend my opinion on the matter then.
your windows is fizzucked, you can do a few things. Reinstall windows using your windows cd. You can completely format the hdd by using a bootdisk then getting to c:\ and type Format C:
The reinstallation of windows would be the better of the two. With the windows CD i believe you could also use it to start your computer in safemode (if i remember correctly) in which case, try to get it started in safe mode. (actually to start in safemode you have to hold down one of the F# keys then select safemode, ill try to find which one it is for you)
Safemode sounds like it
might work because it sounds like you have a problem with your .dll files, still though... just a reinstall of windows (only overwriting windows, dont choose the option to clean the entire hdd) should do the trick, then make sure you run a good virus scan program (McAfee or Norton) to find the file which broke your computer.
~Dan