PIC Cluster schematics/ Basic Stamp questions...

[Positron]

I am wondering if anyone knows where to get schematics for linking (clustering) multple PICS together to form a larger PIC... I looked into a Basic Stamp supercomputer but cannot locate the schematics. Also, I was curious if it is possible to program the Basic Stamp microcontroller to send messages back to the PC to open a file or do a list of commands like the Smart Button. Thank you