Can't get rid of a program PROTECTPC which I downloaded by mistake. It has attached to another program.
I think PROTECTPC is one of a new class of malware called “fake alert”, it is not really a virus, so antivirus software won’t recognize it as such.
If it is, you should be able to go to add/remove programs in control panel and uninstall it.
I would suggest downloading superantispyware free edition http://www.superantispyware.com/
and running it to clean your computer.