I have an Asus CUSL2-C based system with a 1GHz PIII and two hard drives and a CDROM and CDRW. I have this set up as we had discussed earlier with the two drives on seperate IDE channels as masters and the two Cd devices as slaves. Performance has been satisfactory and thanks once again for the advice. I am using Win98SE with this system and therefore need to use the Intel ATA-100 Drivers to get the full throughput from the harddrives. As you may know there have been some problems with these drivers and although things seem to be ok I am considering adding a Promise controller for the Audio drive so that I can stop using the ATA-100 drivers. Do you think having the hardrive on the PCI Bus via the controller card will affect the performance of the audio card I'm using? It is an RME Digi98/8 by the way. Thanks for any opinions you might have on this.