I've been contacted to see about updating an old legacy web application that was built using ASP and Access. The server is running Windows 2000 Advanced Server and I believe IIS 5.0 (I am trying to get confirmation on that, but the company isn't technical so I highly doubt Apache is running on the server).
What languages would be viable for updating this web app on the above platform? I've never touched classic ASP much less done any web development work against Windows 2000/IIS 5. There are no plans on updating the server to anything new due to budget concerns.
I'm leaning at the moment to moving to an SQLite-based database (customer isn't too keen on installing MySQL at the moment but I'm still in planning stages and this is a relatively low-traffic website) but what language would I pair with that? Does ASP.NET work well under IIS 5? Does PHP perform worth anything under this kind of setup?