All, I recently scored a sweet deal on a pair of WD 40 GB 7200 ATA100 drives to replace the existing 8 GB 5400 RPM (?) ATA33 drive in my system. As it stands, I have a Compaq Presario 5150 (don't laugh, I got a good deal on it used from a friend) that I've upgraded to an AMD K6-500 processor. I'm pretty certain that the IDE controller onboard is only an ATA33. I saw that newegg.com had a "PROMISE ULTRA100TX2 CONTROLLER CARD - OEM 2 Channel IDE Supports UDMA 33/66/100" for $23 + $10 shipping. Do you guys think it would be worth my time, money, and effort to get this card? Given my current system limitations, would this card even allow me to see the advantages of ATA100, or does my MOBO limit me to something less? This is the closest I could come to finding the system's specs. The data sheet for this controller card states "Ultra100 TX2 is completely backward compatible with 33MHz PCI systems or slower Ultra ATA/66/33 drives. Supports up to four Ultra ATA drives and ATAPI devices." Anyone care to interpret this for me? I know most would say for $33 just go for it, but I've got the drives, I've a 4-day weekend, and I'd rather not wait to install them! Plus, I'd like to keep the system as simple as possible. One other question regarding the drive configuration: I read in the Western Digital manual it was bad to connect these drives on the same IDE channel as a CD or CDRW drive. Assuming this is the case, would my best configuration be: IDE channel 1 - Master = HDD #1 Slave = HDD #2 IDE channel 2 - Master = Yamaha 16X burner Slave = Crappy Compaq CD drive Does the master/slave order matter on the 2nd (CD, CDR) channel really matter? Sorry for the barrage of questions, but I'm pretty pumped to install these, and I'd like to make sure I maximize any performance increase I might see. Thanks! -Brett.