ALOHA
Actually the problem is ATA133 support.If your HD has it you shouldn't need an addin card.
I'm running WD 200GB with w2k and xp-sp1 and use the addin card that came with HD.
Without drivers installed it doesn't recognize full capacity.Then install correct drivers and works Great..Card boots its own bios to detect connected drives-watch it working as system boots.
I don't use But:
Intel® Application Accelerator here it is..sound interesting to bad I don't have any Intel chips.
Intel® Application Accelerator
Supported Chipsets
The Intel® Application Accelerator supports the following Intel® chipsets:
Intel® 810 Chipset
Intel® 810E Chipset
Intel® 810E2 Chipset
Intel® 810L Chipset
Intel® 815 Chipset
Intel® 815E Chipset
Intel® 815EP Chipset
Intel® 815G Chipset
Intel® 815EG Chipset
Intel® 815P Chipset
Intel® 820 Chipset
Intel® 820E Chipset
Intel® 840 Chipset
Intel® 845 Chipset
Intel® 845E Chipset
Intel® 845G Chipset
Intel® 845GE Chipset
Intel® 845GL Chipset
Intel® 845GV Chipset
Intel® 845PE Chipset
Intel® 850 Chipset
Intel® 850E Chipset
Intel® 860 Chipset
Aloha