this is 4 vista users: i am into gadget development 4 the sidebar and need help w/ideas 4 a gadget based game. Plz help!

I am assuming your going to use OpenGL since you posted in the OpenGL forum?

Some kind of marble game...

I, on the other hand, am sending this to our resident 'game ideas' type forum...

Howdy Game Design forum.... *waves*

You're going to have to give us more information than this about your problem otherwise no-one can intelligently answer.