-----Original Message-----
Does it identify any hijacker as present? You should also try restarting in
safe mode by pressing the F8 function key before the initial Windows screen
appears--and doing full, deep scans with Microsoft Antispyware.
What URL are you taken to? It would help to have a name to attach to the
problem.
Another useful thing to try, if Microsoft Antispyware doesn't spot this one,
is:
http://housecall.trendmicro.com
--
FAQ for Microsoft Antispyware:
http://www.geocities.com/marfer_mvp/FAQ_MSantispy.htm
.