I'm trying to fix/patch the ASPNET 1.1 framework problem with the user-adgent string being too long.
Is there a ISAPI filter that could shape the USER-AGENT header before passing in to ASPNET?
ISAPI_Rewrite from http://www.isapirewrite.com. You should be able to change the USER_AGENT.
Have you looked into ISAPI Rewrite to see if it will do what you're looking for? It's fairly robust.