C will be good, Delphi would be supported, VB6 would also be supported. You could also take a look at the CrossNet Compiler[^] if you "must" work in the .NET environment. Another alternative might be incorporating the Mono-runtime from a C application. The Preinstall Environment isn't meant to be used as a lightweight OS, and it'll be lacking all kind of stuff that you're grown used to in Windows. If you're looking for a small OS with .NET support, consider Knoppix with Mono. Hope this helps a bit more than the previous answer :)
Bastard Programmer from Hell :suss: