can't install windows xp on a drive that has vista on it

Windows Vista2
I bought a hp pavillion that has vista home premium and I'm trying to

install XP on a separate partition. However, I cannot get the XP

installation cd to load: if I boot from it, windows loading crashes,

and if I insert the cd from within vista, the 'install windows' option

is disabled.

There's a microsof kb article at support.microsoft.com/kb/931760

describing my exact problem. And it says that certain bios will cause

xp to not load on a disk partitioned by vista, since it's a different

partition than xp expects. I changed the registry entries as it

suggested, but no result. Also, I emailed them about the hotfix and

they said vista home premium has no hotfix for this.

My question is, how am I supposed to install XP on this machine,

either as a dual boot or to completely remove vista, if I can't even

get the XP install cd to load?


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