Yes there is a paid version of AVG from Grisoft,but you will not need that.There is enough freebies on the net to look after your pc.Others will confirm this im sure.
Just to put your mind at rest,some AV's and antimalware/spyware programs catch things others may miss.
If you are on broadband and do not have your dialup connection connected...you have no worries about dialers dialing out.
Use this to make sure you only have the connections you require. click here this will find all connections available.
Hope this helps.