Hi toxicrat2 and welcome to Windows 7 Forums
I take it that Windows 7 cannot detect the array. Here is a link to the Windows 7 64-bit download page for your motherboard: ASRock > Products > Motherboard > M3A785GXH/128M > Download
Download and unzip the following driver package: AMD all in 1 driver ver: 8.631_W7_logo
Browse to this folder: AllIn1_Win7-64_Win7_Vista64_Vista(8.631_W7_logo)\AllIn1_Win7-64_Win7_Vista64_Vista(8.631_W7_logo)\Packages\Drivers\SBDrv\SB7xx\RAID
Copy the 4 sub-folders onto a USB stick. When you install Windows 7, insert this stick at the appropriate point during setup. Try each of these drivers until you find one that works.