A hacker,also disguised as a repair service,has invaded my computer,when I click on the link, they offer to remove the trojan for $80,
Is there a way to remove them from my files,and keep them off my p/c ?

If you can figure out which trojan it is, there is a possibility that you can, but it would be hard. You can' guantee that you get it all or not hurt something else in the process. Depending on your computer you might be able to pop it into a 'repair' mode and grab your information off your computer and then reinstall the OS. You might even be able to roll back to a backup before you hit the link.


The important thing here to me, being an IT guy, is: Did you learn anything?