Visual Basic Examples

 Here are a Visual Basic 5 exe and Frm that perform basic functions:
Executable: rcx.exe - Requires the VB5 runtimes
Download source: rcx.Frm
View source: rcx.txt

Also check out Eric's Mindcontrol for Mindstorms: Lego on my Mind

As it is, you need to turn your RCX on before starting the exe. I'll improve on this when I get a chance.