The last line - since it includes "viruss~1" and "scan" looks pretty suspiciously McAfee, and probably indicates that your "McAfee installed files" are in C:\Program Files\Common Files\Network (something)\VirusScan?\
I'd confirm that, and write that path down before doing too much else.
You should be able to "comment out" the line by putting a "single-quote" or REM at the beginning of the line -
'C:\PROGRA~1\...
or
REM C:\PROGRA~1\...
to see if it turns off the problem. (The REM prevents the line from being "processed" when you reboot, but it's still there if you decide you need it - just delete the REM. Standard practice) Of course, if it works, you'll want to remember how you got there so you can come back and delete it.
Since you're working to Jim's suggestion, I'd give him a little time to come back and comment, too - before charging too far ahead.