How do I set up dual boot OS's?

[HummuH1]

Hi guys, hope you can help.

I'm buying a new system that will have Vista HP 32 pre-installed. I would like to transfer my old HDD with XP installed on it to my new system as a 2nd HDD.

I would like the option to select at start up which OS it loads.

Can I do this if the two OS's are on separate drives?

Is there a guide/program anywhere that will help me set this up?

Thanks for your help.

 

[HummuH1]

I hadn't planned on re-installing, but everything I've read seems to suggest I'll have to, but that's ok.

Would I be better have them as separate partitions on the same HDD or with one on a 2nd HDD?