Hi David,
If you download the "Free" SDK from SCN - you can distribute applications using the drivers/APIs in-house so long as you aren't packaging software for sale to other companies.
If you develop an ODBC application in-house and use it in-house you are okay to use it in real-time.
The "Trial" button is the only button available on the particular tool our eng folks use to put that web page together.
If you need further clarification let me know.
Cheers,
-Paul