The clue I see here is this line.

"C:\DOCUME~1/DIMENS~1\LOCALS~1\Temp\WERa3a.dir00\rundll32.exe.mdmp"

Rundll32.exe does NOT belong in the temp directory. This is a sure sign that some pest (virus, worm, spyware, other) has invaded the system.

If this was my machine, I'd look up and use HOUSECALL and EWIDO to eject all they find. I would empty the temp folders as well.

Bob