Many people confuse "loading" with "starting up". I think you mean installing Windows XP as that is what your subject title suggests, but is that right?
If so, then can you give your computer specs? You say you have a 733Mhz Intel, but no clue as to RAM size, hard disk size.
For XP I reckon a 733Mhz is very slow, and the processor will struggle with XP. Also, with a 733Mhz, I suspect you are low on memory as well. XP runs best on anything around 512MB of RAM and anything less it will struggle, (that's two struggles you may have).
What about disk size? If it is small, say less than 40GB, you will struggle although I have seen people say they run their XP on a 10GB drive. So, are you now struggling on 3 counts?
Perhaps it is time to retire the old chap, and just let him carry some backups of important files and settings, or whatever.
I'm running a 733Mhz intel, that might be the source, but i think it could also be the mobo. I know all my other hardware and RAM work fine. Yet everytime I tried to load Windows XP *loading...loading...loading freeze* and it would sit there forever if I let it, I've tried everything I could think of, repair install, reformat, changing out hardware, safe mode ect. The only thing I didn't try yet was a different OS version like 2000Pro or something... we'll see if that does anything, but I'ld much rather use XP. Anyone have any ideas? They would be greatly apprechiated.