Right then, well first off this is certainly the right spot for this.
Now then, onto the problem at hand, what various Anti-Virus/Mal/Spy software have you tried?
Honestly would suggest first off Malwarebytes myself, but that's personal preference really.
Also have you tried running anything like a dedicated rootkit scanner? Rootkit revealer, sophos Anti Rootkit and all the lovely variations from different companies?
Have you tried forcibly closing the various problem executables? And do they start with windows itself or do they only start when you do certain things? (can also check some of your startup programs by running msconfig.exe from the run command, though the Autoruns program from Sysinternals is by far better).
Possibly downloading, running and posting a copy of a hijackthis scan either here or on a more tech focus'd forum would provide your helpers with more information on what's happening.
Squeak.