I've looked for a solution to this problem. The easiest way would be to find a TREC contract in a pdf form that allows you to fill out the information. But I have not been able to find one that you can edit. One solution would be to use a non-trec contract. Possibly one that is in a Word document format, so you can fill in the blanks.
Another possibility is to fill out a TREC contract by hand, then scan the pages into a pdf. There are systems on the market to make this much easier, but I haven't messed with any of them. But once you have the pdf of the contract, you can email it or fax it with something like eFax.
Good luck, let us know how you solve your problem.
Mike.