task manager wont open and limewire keeps restarting

my task manager wont open with ctrl alt del or when i right click the windows taskbar either. i also tried opening the TASKMAN application in C:\WINDOWS, and copying and renaming that application, neither work. my limewire program also opens up by itself everytime i close it.

i believe the problem started when i downloaded something called setup.exe, me being stupid, i opened it but blocked its access with my firewall software. there is now a hidden folder in C:\Program Files called outlook with an application called outlook (not outlook express). i believe this is where the problem is coming from, but i cant delete it because when i try, it says the application is being used and since i cant open the taskmanager i cant stop the application to delete it.

any advice on my problem?

Hello itzdatng.Welcome to Techspot.

Go HERE (http://www.techspot.com/vb/topic50981.html) and follow the instructions exactly.Then post an HJT log in the security and the Web forum.