I recently ended up downloading a virus from the Internet to my Dell running Windows XP.First of all, the virus blocked access to the Task Manager. I had had one of these before, so I used my anti-virus programs to find and delete it. However as it was being deleted, I got several "See ya b***h!" messages, followed by the address bar in web browsers disappearing and not being able to close the browsers normally with the close button. Instead I recieved "This operation has been cancelled due to restrictions in effect on this computer. Please contact your system administrator" messages. I tried restarting the PC thinking it would solve it, but now after logging in, I get the same message straight away and cannot close it. I cannot use anything on the PC now and the clock and mouse scrolling speed appear to be affected as well. I have tried to unlock my PC by closing the error message using Task Manager, however the desktop will not show and when I click Start (which is now missing the Run and Turn Off options), the menu closes after a few seconds and will not open anything I manage to click. What can I do? Thanks