Hi
I mentioned winamp becouse you did in your first post. winamp is a media player.

i have no idea what this is, but i was just looking through my c drive and found a folder called "c7bebf6fd69d3fc7be9a7f872d990d54"
Not wo worry about those, It is from windows update.
Post a report from this tool if any FILES show
F-Secure Blacklight: https://europe.f-secure.com/blacklight/try.shtml
Click the i accept button near the bottom of that page.
click the first download button (version with grapichal user interface)
Download/save (not open) and run blacklite click > scan then > next, next again then exit
there will be a new txt near blacklite. post it please.
Important: If any files show Do not rename them YET.....legitimate files can be listed.

Download and run Silentrunners.Vbs post the log it creates please
http://www.silentrunners.org/sr_scriptuse.html click no to not skip the suplimentry searchs
Wait until there is a All Done message !!, Then open and post the log next to it.
Your antivirus script protection might interfear or alert, please allow it to run after a bit box will say done.