|First do this...|
Start -> Run -> type services.msc
Select "DCOM Server Process Launcher"
Right Click -> Properties
Change Startup type to Disabled
Click on Recovery Tab
Change all failures to Take No Action
Then like said above do a virus scan. I suggest...
P.S. I have not seen the Blaster Worm in almost a year. I thought we eradicated that virus. People need to stop opening attachments from emails they don't know.