Windows On Mac :: Formatting 2TB Internal Data Drive For Both?

just received my brand new iMac 27" i7 today (2.93Ghz /2TB HDD + 256GB SSD/12GB RAM (4GB stock, although I upgraded 8GB more)) and I couldn't be happier. It's absolutely wonderful although it really burnt my wallet! I have managed to successfully install Windows XP via Boot Camp and have both Mac OSX & Windows running natively. I am very suprised that XP can see all the hard drives available within the mac itself even though they are HFS although I assume I cannot write onto them.

I believe I am at the stage where I would like to partition the 2TB HDD as discussed previously in my previous questions on this board. I would like 1TB for mac data storage (Mac OS extended) but I would like the other 1TB for Windows data storage (NTFS), however, this does not seem possible in the disk utility There is, however, an option for 'free space' or ExFat (FAT 32). Would I be right in saying I could format the hard drive as 2 partitions, partition 1 being Mac OS Extended and the 2nd Partition as free space or ExFat via Disk Utility. Once that is complete, I boot up XP and right click on the 2nd Parition which is ExFAT or Free Space and reformat the partition as NTFS? Does that work and make sense or is that stupidity?

(also on a side note, completely off topic, does anyone know how to get the magic mouse working in XP? I've got the keyboard (wired) working fine, however, the mouse doesn't seem to commicate. I've followed the tutorial/guides of adding the bluetooth mouse but when I tick the box "keyboard, mouse and misc functions (HID)" it states "access denied". I've tried several times and the device that i've just added disappears?