the site i walked into was apparently ahead of the game and Norton (my antivirus program) was unable to detect the signiture of its attack.
however, (2 weeks later) Norton, Malwarebytes and Avast all say the computer is ok. but i'm attaching the report of rootrepeal and of GMER (which i think looks for rootkit problems). both have lines like these:
SSDT ZwCreateMutant ZwDuplicateObject ZwFreeVirtualMemory ZwImpersonateAnonymousToken
which i find a bit scary. do i have a problem?????
many thanks for any advice
(also there are the otl files)