Craig,
Thanks for the link. I didn't have the time to read it but I agree that this is a good way to go.
Currently, when we have a project go out to bid, we set up a transfer drive that all bidders can access. On this drive are downloadable plans, specs and contract documents, places to post RFI's, and similar.
After the contract is let, the transfer drive is restricted to the appropriate contractual personnel and then serves as our communication center between all the parties involved.
It works well. Although I think it works at all only because of it's simplicity.
Bob G.