vbscript Compatibility Issues with windows 8

Question

My company is currently hosting a legacy application that contains a great deal of vbscript (client side browser and task automation ), classic asp and some vb 6. (I know pretty old) While we are in the works of rewriting a lot of it piecemeal. We will eventually need to support windows-8. Is there a list of issues or compatibility tips to look at in supporting windows 8?

Update

VB6 Running on Windows 8? partially answers mine as far as VB 6. But still concerned about vbscript.

vbscript support in windows 8 covers a good deal more