I am not familiar with regedit. I have used it plenty of times, but all I did was follow instructions from tutorials. I know how to navigate in and out, but don't know what to look for. I am okay with trying though.
Also, my anti-virus programs I have are (only the ones I actively use):
Adaware Anti-Virus
ZoneAlarm Firewall
Malware Bytes
I have more, but I don't run them often at all