netpatrol - keylogger? have I been hacked?

A friend is accusing me of having infected their computer via Yahoo mail and chat.

I ran spyware terminator and this is what came up

Does anybody know what this means?

netpatrol (keylogger) keyloggers invisibly moniter and record all of your computer activity. This information is then automatically emailed to an anonymous user

file c:\wexec.exe

fileC:\users\jeff\appdata\roaming\microsoft\windows\startmenu\programs\trwconferencing\uninstalltrwconferencing.lnk

Invalid startup items (invalid item)

items that are linked to non-existing file in your registry

registry hkcu\software\microsoftwindows\currentversion|runmessenger(yahoo)= (??? c:\progra yahoo messenger yahoomessenger.exe - quiet

Please, never post twice the same, just double the help effort.
Follow http://forum.avast.com/index.php?topic=61744.msg522125#msg522125