EAC freezing detecting Plextor PX-40Tsi

I have two drives hooked to my comp, Lite-On 40x burner (ZSOJ) and Plextor PX-40Tsi thru a Tekram SCSI card. Whenever I try to detect Plextor drive features in EAC, comp locks up and won’t even respond to ctrl, alt, del. I’m running XP, AMD 2000+, 512mb DDR333, Soltek SL-75DRV5. Any help would be greatly appreciated.