Malware, dns changer, QNB2EB90WX, avg.exe, RZDVL2F27W?

okay so i downloaded a key-gen for adobe because i cant afford there prices, well it was for the master collection since i already had a key-gen for photoshop,(the photoshop one was legit but i knew there was something fishy about the master collection keygen) well i download it and mcafee tells me i have a dns changer and that it stopped it, well i researched it because i kept getting redirected in my browser. i deleted my temp folder immediately on instinct, well i looked in my registry and under HKEY_CURRENT_USER/ SOFTWARE / MICROSOFT / WINDOWS / RUN the avg.exe was in there, so i went ahead and deleted that. will that mess up anything i thought to myself, but owell its done, But will it mess anything up i am asking??. i also have under HKEY_CURRENT_USER/ SOFTWARE / the QNB2EB90WX and the RZDVL2F27W, is it okay to delete those too?