>I have two customers interested in having us send/receive EDI transactions from our FoxPro based software.
>
>Where is the best place to start? Are there any good resources available for someone wanting to write EDI functionality into their software?

If I were you, I'd send an XML message to BizTalk Server and let it take care of converting it to whatever EDI schema they expect, and have BizTalk send it off...

Markus