PC wont boot Knoppix

[Weetabix]

First off,
A Very Merry Christmas to all and hello - I'm a total Linux n00b , I've heard and read great things about it (all from ex-Win users funnily enough) , especially Knoppix. I'm a XP Pro user atm, but would like to find out more about Knoppix.

I've dled the 3.7 iso, burned it on to cd, and tried booting from it having followed the instructions that came on the CD, changed the boot sequence on my pc to

1. CD
2. HDD

yet it still loads Windows. I suspect its down to my mobo/BIOS which is probably (not sure) an i815PE, with a 1 Ghz p3.

Any suggestions, on why Knoppix isnt booting and what to do, would be much appreciated.

[Weetabix]

, found the thread explaining what to do.

[rcook]

How is it going other than the blush?