Dual boot dual drives questions...

Ok i read most of the SSD posts and learned quite a bit, but i'm still having an issue...

I wan't to have my SSD as a W7 boot drive and my HDD as a Vista 32 drive.

problem is for some reason even thought the bios sees both drives it immediately boots to the SSD not even giving me a choice to select between the 2 drives.
I don't get the bios screen with the
windows 7
Windows Vista
select option.


thanks!