ATA-100 on 33MHz bus

Are the newer/faster ATA-100 drives backwards compatible? I have a 2 year old computer that is running out of disk space. I'm not quite ready to replace the whole thing. Are Ultra DMA/100 compatible with the original spec? Specifically a 60GB IBM Deskstar 60GXP. TIA, Jeffrey -- I don't do Windows and I don't come to work before nine. -- Johnny Paycheck