Plugin in VB?

It should theoretically be possible, but it won't be easy since you'll have no form or anything to work with; everyone will have to be drawn manually. There's a C SDK with samples which I tried to convert to Delphi without seeing much results so far... so you're up for quite the challenge

Plus I don't know if Youri will be changing the plugin structure any time soon, I heard him talking about adding keyboard input support...