Hi,
funny that you're asking :-) The first article on the hubFS web page answers this question:
http://cs.hubfs.net/blogs/tomasp/archive/2008/03/08/aspnet_in_fsharp.aspx
There is also a project that attempts to make it possible to write client-side scripts running in web browser in F# and simplify communication betwee server-side and client-side. More info is here: http://tomasp.net/blog/fswebtools-intro.aspx. It was a bit inactive recently, but I'm hopefuly going to get back to it and make it ready for the "commercial version of F#" soon!
T.
Tomas Petricek (
Blog), C# MVP
My book:
Real-world Functional Programming in .NET