Recovery after Virus Attack

I'm sorry to say that while all this community makes me feel warm inside, I cannot find anyway out of my problem.

 

A few months ago I had a virus attack the trashed my anti virus program.  I also temporarily stopped me from accessing the internet.  I managed to get on some Symantec message line using another PC which said nothing could be done till I got back on line - thanks guys.  So I got a local technician to sort my problem - harder than it sounds in Vietnam.  In the process my anti-virus program was wiped.  I've been trying to renew but cannot find out how.  Should I get a subscription to the Kaspersky program the technician installed to clean my system or is there any way I can get Norton up and running again.