Efficient Storage -- Partitions

So I've got two hard drives in my box..a 320GB/8mb cache and a 750GB/32MB cache. I'm looking to dual boot Windows 7 and XP 64 bit..With 7 as my primary as I like it much more

Any ways, I am looking for the most efficient way I can partition these drives, something along the lines of OS/Games/Music/Documents?

Also, I'm tryng to figure out which RAID configurations would be suit my interests. Both being in 0 maybe?

I've never had this much space to play around with and I'd like to make it as neat as possible.

So any suggestions of how I can arrange all of this is much appreciated.

Thanks

The simplest thing to do is put XP on the 320 and Win7 on the 750.

Well at the moment, They're both booting off of opposite drives (Xp is on the 750/7 on the 320) so I'll switch them around and do something like this?)

-750 - Windows 7 Partition / Games Partition / Music Partition

-320 - Windows XP Partition / Documents Partition


As far as dual booting goes, in order to boot separate OS's I have to load the proper Hard Drive from my BIOS..is there a way to have a "dual OS" bootloader..like a flash screen that allows me to toggle which OS I boot into, instead of BIOS or F8

Its not really an issue, just curious.

Thanks Everyone!!

PS - So no RAID settings, would be preferable?