Computer: HP Pavilion Pentium II 300Mhz; 176Meg Ram Came with Hitachi GD-2000 DVD-ROM I added a Plextor CD-RW and changed the 6Gig HD to a Western Digital 40Gig. All of these drives are IDE. The only way I can get them to play together is with the HD as a solo on Primary, and the CD-RW as master on Secondary with DVD-ROM as slave on secondary. The problem is the Hitachi DVD-ROM is only capable of 1X audio extraction, so I have to use the CD-RW to "play" CDs to a temp file, then record to CD-R. I got the "bright" idea to add a cheap ($29) 52X CD-ROM drive, but I can't get it to be recognized in the bios, without having one or more of the other drives drop out. I've tried every combination of master/slave I can think of. Just for grins, I added another HD as slave on primary, with the DVD and CD-RW on secondary; that worked OK. Is it possible to have a HD, DVD-ROM, CD-ROM, and CD-RW on one computer? or should I bought a faster, replacement DVD-ROM (Creative Ovation 12X?)?? Sorry to be so long-winded; I hate it when new stuff doesn't work.