Trojan.zeroaccess!inf4

Got my first virus yesterday.  Bummer!

 

I ended up paying Teesupport $70 to help me.

 

Questions...

 

Is it truely gone, or is it a good idea to re-build my PC from scratch?

 

When it was infected, it would prevent other PCs on my network from accessing the Internet.  I would unplug the infected PC, and then the other ones can access the Internet.  What was going on?

 

Thank you