>What's the best way to pass values between Windows forms in vb.net?

When you create the form, you should just be able to pass parameters to its constructor. When you create the form, you also have an object reference to it from teh original form, you shoudl be able to set any public properties or call any methods of the second form at that point.

You can also pass an object reference from the calling form to the called form, if that helps.