jacob:
Most board will provide their Realtors with the MLS data for FREE. Call your board and ask them. Here in Southern California, I have a login to their servers and download the MLS data files every night so I can build my own MLS search. I have done this for numerous other agents who belong to other boards.
There are usually 2 types of IDX requests that boards will provide to their members. A framable IDX solution for their website, and an IDX data feed. It sounds like you're wanting the IDX data feed. But be warned... it can be a lot of work. You've got the MLS data, agent data, office data, features data, and tons of pictures to download. You'll need a BUNCH of server space... and quite a bit of programming knowledge.
Let me know if you can get an IDX data feed, and if you need any help, let me know... I've done it several times.
_________________________
==================================
Greg Mazurek
Find
Orange County Real Estate info and online Orange County MLS Search.