I have been following Mono on the C# front, however I know that they
are saying they will also support VB.NET.
It’s supposed to be there for Mono v1.2 … and I believe that it’s
going to provide a lot of momentum for Mono.  It would interesting
to
see this Gambas development environment integrated with the Mono v1.2
VB.NET stuff
…

Gambas 1.0 RC4 (Development). A Basic graphical development environment. [freshmeat.net]