Generically speaking... this
Trojan is a Password stealing type of
malware... it is
spyware basically.
Since its a spyware, you want to use an antispyware app to combat it.
While an antivirus program may detect a Trojan that a spyware contains, it isn't made to cleanup spyware itself, so, there are likely many items that AVG would have missed.
I have seen too many instances where AVG list any infection as a
virus and seen too many "infected" PC running AVG with no word from AVG about them ... you don't actually have a single
virus on your PC ... not a one.
Dump AVG, go get
Avira AntiVir AND SpywareBlaster
AND SBS&D
AND install MS Windows Defender
AND CCleaner ... get them from
http://www.spywarepoint.com/downloads/ ... install, update, run.
Failing all that ... go get
http://www.spywareinfo.com/~merijn/programs.php#hijackthis ... only download this program from this website ... there are, I'm sad to say, imitations to HJT that are not the real McCoy. Post the log here from HJT and we'll take a look for you.
oh, if you do not follow this advice this time ... reformat your PC.