I dont know about that specific card, but to get my onboard silicon image raid controller to work it was a bit of a hassle. I tried to load the drivers off the first screen on the install with the external drivers option, I dont remember exactly. This never worked because the modules always got replaced with the SuSE version.
To get it to work I had to go through the install like normal where it autodetects everything and loads up the install kernel. When it gets to the first screen after that, the date/time screen I think, I had to switch to another terminal <ctrl><alt><F#> pop in the driver cd and then manually load in the module. Then switch back to the install screen usually F5 or F6? and continue like normal. I had to do the same steps again during the reboot during the install.
I dont know if this will work for you, but worth a shot. You'll be able to tell if it worked right away in the next screen or two where it autodetects the disks.