Tony,
I can't believe no one has replied either. Have you heard anything about this since you last post?
The ARCO cards look promising but a little expensive ($240USD). The ADTX card looks worthless.
Also, one of the other posters, gshock999, mentioned a driverless RAID card from XFX called a REVO64. The link is:
http://www.xfxforce.com/web/product/listConfigurations.jspa?seriesId=66&productId=835
The price for the REVO is approx. $140USD.
I'd be happy to contribute to a "testing fund" to come up with a solution.
Best,
Flyman