This just in from X-Bios!

There are a number of new tweaked Bios's for motherboards on this site. most add FULL RAID support on "LITE" versions of Highpoint and Promise Bioses.

there are also instructions on how to add roms to bioses and there are many drivers available. The site is in German but translation links are on the website.

ABIT ASUS DFI ELITEGROUP GIGABYTE MSI SOYO and TYAN Bioses are available