open task manager to see if there are processes like:
avserve.exe, 914_up.exe, xax.exe running. if so you are hit.
also open c:\windows\system32\drivers\etc\hosts to see if the worm has added all av site mapping to 127.0.0.1
or, simply try to go to www.symantec.com, if you cannot go there, you are hit.
you cannot find any info about this worm at any av company yet.