Ive Done It, its Easy, but. . . . . (Score 2, Informative)

Step 1: Buy a Adaptec ATA133 card, install ($65) (Note: step 1 is not necessary, it just helps speed things up significatly) Step 2: Buy a nice cheap 80GB ATA133 (if no card, a ATA66 drive) drive (you can get one for less than $30 from Comp-USA with rebates) Step 3: Max out RAM. Can get cheap, very good RAM from www.satach.com I maxed out my Supermax S900 with 1GB RAMfor less than $99.) For the G3, Ide think less than $60. Step 4. IMPORTANT: partition your Hard drive into two partitions, the FIRST as 8GB, the rest, whatever is left. Step 5: get a Sonnet G4 ZIF processor upgrade, install. (About $250) Step 6: Get a new video card that supports Quartz Extreme. That should about do it. Ive been running OSX 10.2.6 on a Beige G3 Desktop and have had no problems whatsoever. If you are runnning classic and OSX, you sometimes have to physically pull the finder out of the system folder to trick the system into booting into OSX. Once you do that, it works fine. But Ive done this only with 1 machine as a test and that most of the upgrades I acquired when I was using OS9 exclusively. Frankly, when you add up the RAM, the ATA controller, the new Hard Disk, the Processor Upgrade, video card, and the OSX software (assuming your not a pirate), it just isnt worth it. Go to ebay or to macconnection and look for those really cool eMac's that are around $700. You can even get them refurbished with warranty for less. And they scream compared to the poor old G3233, even with all the upgrades.