I have spent many years working on PCs and am A+ qualified but I have never used a Mac and have had no experience of them at all, so recently I bought an old G4 Quicksilver 733 with a 17" Cinema screen and keyboard etc. and Tiger, I would have liked a higher specc'd one but my pension wouldn't run to it. I then researched as much as I could (online) about the G4 so that I wouldn't blow it up at some point. Then when I had garnered a little knowledge about it I decided to open it and look inside, WOW really really tidy and so well engineered, I was impressed. I now looked to enhance this lovely machine and so investigated my options, first I added RAM to take it to the max. The CD drive was replaced with a DVD Dual writer which was recognised by my G4 after a restart ( I was later to find out that, that is not the same as fully working) I find that it will mount okay and I can access it but I cannot boot from it to install or updates etc. Any one know how to fix this? I managed to get hold of a Dual 1Ghz CPU board and cooler which I swapped for my733mhz one and also added a USB 2 PCI card, again, it was recognized and worked correctly so far so good. So I now started to look at hard drives only to find the 128Mb limit in the firmware Boot ROM 4.2.1f2a with little searching I found reference to a BootROM 4.33.f2 which would enable the use of LBA and bigger HDDs. This brings me to my stopping point how and where can I get this BootROM 4.33.f2, I can find nothing on the Apple site to help me so can any of you guys help me to get hold of it and thus further my adventure into the world of Mac? My future upgrades plans ( as my pension allows) are to install SATA hard drives which may be exciting and will require a fair bit of research to accomplish economically. Look forward to hearing from all you Power-Mac wizards.