hey peeps

i recently got hit with a couple of viruse's (off Kazaa too i believe!) and since then ive had a very annoying problem

everytime i try and load a program, it says window cannot find the .exe file for the desired program. I can get around this by right clicking, and then "run as" and then unticking an option that pops up, but i really wanna get this fixed as im unable to install any new software and i need to get Cubase SX installed as soon as possible!

anyone got any ideas on this? i think i may have deleted a file in the sys folder or something during my time trying to fight the virus! :o(