Is MS ajax available for asp.net v1.1?

Sorry, the Microsoft Ajax Extensions are only available for ASP.NET 2.0 and it is later on included in the coming ASP.NET 3.5 release.

/Per

To get the full set of features you have use Asp.net 2.0 or heigher. But you can use the Client Side Library (JavaScript) with any other platfrom even in VS2003 projects. You can find a working example of VS2003 in this urlhttp://geekswithblogs.net/rashid/archive/2007/07/21/Asp.net-Ajax-and-VS2003.aspx

No it is not but you can implement this using activex object and calling a apsx page or http handler.