HELP PLEASE- think i have a virus computer messing up and i am confused

hi,
i do not know too much about computers. i am having this error reporting message popping up very time my computer starts: this is the files it gave me:
C:\DOCUME~1\MELISS~1\LOCALS~1\Temp\WERa8c3.dir00\svchost.exe.mdmp
C:\DOCUME~1\MELISS~1\LOCALS~1\Temp\WERa8c3.dir00\appcompat.txt
when i click, send, dont send or debug the computer screen either locks up or loses color or the screen starts to look boxie ( if that is a word- not really sure how to describe it) sometimes the screen stays clear or i cannot click on things or links. on the blue start menu bar somtimes parts of it turn white.

i have tried to search for this file and it seems like it doesnt exist

i have updated all my virus scan (AVG) and now i am getting AVG error messages saying it cannot run

i have read many different post and tried all the:
jotti
VirusTotal
virus.org
Kaspersky
viruschief
and they all say i am clean but obviously i am not. AVG said SHELL32 needed to be changes, but i have no clue what that means!!

i have ran some other things i have found on this site and i will attach what the reports are at the bottom of this - or at least i will try

i have also tried to delete programs i dont need or that somehow got down loaded but i have no clue what to get rid of or what to keep

Please help
Mel