Windows XP unable to install -- stalls at 33%

[RevBrently]

I've tried several times to install XP on my iMac (OS X Leopard). All goes well until it reaches 33% (Preparing Installation), where the disk stops spinning and the XP install just pauses indefinitely. I've tried doing it from the beginning three times already, and the same happens each time -- no errors, just stops the install process and remains at 33%.

Any ideas what's going on?

[vbox4me2]

Make an ISO of the CD. also enable passthru.