Nothing Specific to VBScript. Other interfaces you might look at are Web.Link and Automation Gateway.
Web.Link is a JavaScript API for Pro/ENGINEER. You may already own it.
Automation Gateway is a VB interface for Pro/ENGINEER. It was created by Rand and I'm not sure what its future will be when the software relationship between Rand and PTC ends (rumored to be 2004).
Hope this helps.