Hmmmm, i once worked for a company that decided to switch their web site from Perl to JSP. I thought it was a completely unnecessary idea, but it did generate work a few people who were in threat of becoming obsolete. So, on the bright side -- you have work! :/

I did a lot of Visual Basic programming before i learned Perl, my recommendation is to use C#. I think most of your pain and suffering up front will be learning Microsoft's Model View Controller model. After that, you will probably find yourself enjoying the project ... but i have a gut feeling ASP.Net is just like the rest of Microsoft's products: once you find yourself taking the path less traveled, you find that Microsoft has no answers for you any more (and they call it support). Oh, and by the way, that company i mentioned earlier was another Dot Bomb, so unless there really is a damned good reason to switch the web site's back end, i'd start looking for another job now... just in case.

L-LL-L--L-LL-L--L-LL-L--
-R--R-RR-R--R-RR-R--R-RR
B--B--B--B--B--B--B--B--
H---H---H---H---H---H---
(the triplet paradiddle with high-hat)