I don't have one so it's hard to help on this one but I'm a little surprised that it doesn't just work. Here's a message about how to get it working on Red Hat 8 that might be helpful:
http://www.geocrawler.com/archives/3/45 ... /10236782/
EDIT: After looking at my Fedora config I guess I'm not surprised that it still doesn't work properly in Red Hat 9 as the items mentioned in the above link still have not been done. I think following the steps listed in that link should get it going though (including recompiling the kernel after turning on the "Probe all LUNs on each SCSI device" option (CONFIG_SCSI_MULTI_LUN)).