This virus is making me crasy!!!

I noticed this virus when i one day turned off my lapptop.
And the message "ending program" showed up, i was just able to read "foster parent" before it disappared.

After that day i have had alot of strange things happening.
like when i try to start explorer, its trying to install adobe reader instead.
and i have to cancel the instalation many times before explorer opens.
I tryed to uninstall adobe reader, but then the same thing happend with microsoft office. My next problem is that i have only half speed on my internet connection, and i closed all running programs, but i can see that its sending and reciveing information from the nett. Also i had high CPU usage from a file named svchost.exe but one of the programs below fixed it, i dont rememer what program

I currently use NOD32 anti virus, but it doesnt find anything.
I have also tried housecall, superantispyware, a-squared and adaware.
I have tryed to seach my computer for "foster" & "parent" and anything simular, with no luck. even tryed to google for some time, i found one that had some of the same symptoms and a-squared helped him, but not me.

Anyone know what i have to do next?
If any more info is needed, please ask... thanx in advanse...