HELP! Since virus hit can't access old files or programs!!

Since I got hit with a virus I can only access Internet Explorer, Control Panel, avast! Pro Antivirus program I reloaded and I am able to download and run programs but all original files and programs are ineccessible.
I am following blog to rebuild files and enclose Extras.Txt and OTL.Txt files could you help please. ???

Logs also posted here http://forum.avast.com/index.php?topic=92431.0