I'm sorry I don't understand the question, so Err... I can't help.

How can you have an active CMD prompt in the background?
If the active CMD prompt is active in the background what is supposed to be happening in the foreground?
Are you trying to emulate a windows service through VBScript?
Why are we disabling the mouse or keyboard?

Perhaps a description of what you are trying to achieve would be a more suitable post.

- A.Kahtava