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This may give you some good info.
[asp.net...]
.NET may be the future for Microsoft dependent developers, but JSP is a much more robust and widely deployed framework.
IMO ASP is best in some situations and ASP.Net is best in other situations- I wouldn't perscribe using one over the other all the time. Personally I enjoy ASP's script based back end, I make a change to the web page and I see it right away-- with ASP.Net with every change you make the script has to be "compiled" the first time its loaded in the back end.
Also ASP.Net stresses the seperation of HTML and the ASP code-- whereas vanilla ASP allows you to intertwine the HTML and the ASP as much as you see fit, whichever you prefer. Checkout PHP while your at it though ;).