Originally Posted by Sleepless

It doesn't have to be uninstalled. The startup entry has to be removed, so the program doesn't startup with the computer. After that, you can turn it on to scan and then restart your computer to turn it off.

If we get quite technical, then website block function can be removed from it through registry. I'm sure the same is possible with P2P programs. But why go to the trouble when removing a startup entry is enough.