Thanks, believe it or not some non-FoRKer sent me this yesterday
evening. The full URL it sends you to is:
http://startrek.msn.com/gatekeeper.asp?reason=Incompatible Browser
Note the illegal space.
The page is testing for Authenticode, which was present from
IE3.02 (but never in Netscape). The page probably relies on
ActiveX (seems more likely than Java, no?). Netscape need not
apply.