Carol, With a 200 Pentium, it's doubtful that you would notice any difference. Ted Brewer ----- Original Message ----- From: "Carol Hooton" Using Win95 OSR2 on a Gateway Pentium 200 with MMX. Adding a new Maxtor IDE HD with ULTRA ATA/66. Bios only supports ATA/33. Should I install an ULTRA ATA/66 Controller card or do you think I wouldn't notice the difference? I'm adding the new drive mainly for added capacity reasons. Carol The NOSPIN Group provides a monthly newsletter with great tips, information and ideas: NOSPIN-L, The NOSPIN Magazine Visit our web site to signup: http://nospin.com