Dual Boot on Different HDDs

Greetings...

I have a "Workshop" computer I have built from spare parts. I'd like to set up a dual-boot WinXP/Win7. I have 2 HDDs, a 160GB SATA drive with WinXPSP3, and an IDE133 80GB drive with Win7. I have presiously set up a dual boot on another computer with 2 IDE drives and read of many dual boot systems... however, they all boot to a "boot options" screen that offers:

Windows 7
Earlier Version of Windows

That's what I was hoping for here, but it keeps booting into whatever Windows is set as the primary boot drive. My only guess as to why is ther two different types of drives. I don't really want to F8/choose boot everytime I turn this thing on, so I'd appreciate if anyone knows the following:

1) Can a WinXP/Win7 dual boot set-up be done with an IDE and SATA drive(s)?
2) If so, what am I doing wrong?

NOTE: I installed WindowsXP first, then Windows 7, as instucted by numerous tech sites and my own previous experiences. Both installs are clean and new. Both drives are checked and good.

Hardware:
ASUS M3N78-VM
AthlonII 7750BE
4GB GSkill PiBlack PC-6400
XFX 9600GT XXX Ed.
Antec EarthWatts 500W PSU
WD 160GB SATAII HDD (WinXP)
Samsung 80GB IDE 133 HDD (Win7)
LG Super-Multi Burner (IDE)

Any help appreciated, thanks.

 

I had the same issue with IDE and SATA with my ASUS A8N-E and just bit the bullet and got another SATA. Why not partition the SATA and dual boot that way. Use the IDE for storage.