Vista/XP Dual Boot Questions

Here is my predicament:


I purchased a computer with Windows Vista Home Premium x64 preinstalled. This computer comes with a 640GB SATA II hard drive. Recently, I have decided I do not want to use Windows Vista for at least (estimating here...) another year, and I'd rather use Windows XP.

I have another hard drive that is IDE. On this IDE hard drive, I would like to install Windows XP. I would also like to make Windows XP the default OS on this computer until I decide to make the eventual switch to Vista. Here are my questions:


1.) http://www.pctipsbox.com/dual-booting-xp-deletes-vista-restore-points/ - Here, it is reported that dual-booting Vista/XP will cause Vista's restore points to be lost, which I do not want to occur. With the OS being installed on 2 separate drives (one SATA, one IDE) in my case, is there a chance this happens?

2.) How do I set up which OS my computer boots from? Do I use the BIOS menu and declare the IDE drive as the primary drive to boot from, or is there a way I can actually set up a boot loader that will let me choose which OS to use, without using BIOS directly?