I bought one of these a few years back and it's still ticking along just great: http://www.liquidationetc.com/53/15653.htm?665 I found that deal here: http://www.pricewatch.com A Mac place to check out is: http://eshop.macsales.com/Catalog_Page.cfm?Parent=91&Title=2%2E5%22%20IDE%20 %26%20SCSI%20for%20Laptops&Template= I went with a 12.5mm drive because I was concerned about heat issues, especially with a 240mhz G3. The 9.5mm drives leave a little space for which compensation may or may not have to be made. How much do you want to spend? The new IBM 80GB with 8MB cache are around $260. You can get a 20GB 5400rpm drive for around $100. But eventually you'll want 40GB. Then 60 > I am looking to replace the HD in 2400, still has > original. Anybody have any suugesstions on > brand/type/speed etc. > > I am thinking something between 9 and 20 gigs, > depending on what kind of deal I can find. > > TIA > > Brian