Ubuntu install problems?

I have this 12 year old HP Pavilion 5663 with a M50 monitor. It has Windows 98 on it and I want to put the latest edition of Ubuntu on it (not the beta). I have a live CD and I try install it from that so I wait for 5 hours to wait for it to install looking like its working... You can see the orange bar move across the screen... After its at 100% done, it just gives me a purple screen. I did a "hard shut-off" and then it came up with the old HP logo and a black screen with a white blinking cursor. Every time I tried to press a key to bring up the BIOS settings, it just makes an annoying beep. What did I do wrong? Also, what key should I press to bring up the BIOS menu-thingy? Oh, and do you know of any website that can give me assistance with my old computer (other than Y!A and the HP website)?