HDD issues

No sense at all. I've had the OS installed on D now, the backup drive is C, but I don't think it's possible to change the drive letter without reinstalling all my programs. Created a partition on drive C called G for backup, I may move my files that I need to backup, format D so it's on C and transfer my files back. Then I'll install XP on drive D (drive letter changed) so I can have a backup if I can ever not start Windows., and make a partition on drive D for backup at around 10GB in size or so. Maybe it's not worth doing all this, I'll consider it.

This is the procedure for creating a new partition boot sector to the system partition, if you are still interested.
Put the WinXP CD in and reboot, go to the Recovery Console:
Once console is loaded, enter this command FIXBOOT Cwhere C: is the hard disk drive where WINDOWS XP is installed).

For more info on this you can find it here

I would also recommend that you set up several partitions, one for OS and maybe programs you will never want to uninstall, one for the Pagefile, one for Apps, one for games, one for CD assemblies for burning, one for media(video and music) and one for data. You could combine some of these or have even more if needed. This is just an example of possibilities. The main thing is that it keeps all your data safe in the event of a terminal OS problem. It also reduces fragmentation and helps reduce clutter.

OK well it all works fine now.