xp internet security 2012

hi to all. my sister got some xp internet security 2012 (it’s blocking her internet access) and avast does not detect it! I’m trying to help her but I dont find a way. any possible help? she has windows xp home.

read it all before you start

Remove XP Internet Security 2012 (Uninstall Guide)
Automated Removal Instructions for XP Internet Security 2012 using Malwarebytes’ Anti-Malware:
http://www.bleepingcomputer.com/virus-removal/remove-xp-internet-security-2012

If you still need help, then follow this guide and attach all logs
http://forum.avast.com/index.php?topic=53253.0

@Pondus

Instructions on BC’s billboard for mbam
Not safe removal.

Best follow essexboy Instructions.