Drivers though much harder so far Dell M1530 XP Drivers looks the most promising will let you know how I get on!
One issue I did have was getting XP to see the drive:-
If you're lazy and don't have a USB floppy drive, this method will work but some have suggested you lose some AHCI functionality. However, it still works so keep reading. First step is to turn off SATA AHCI mode in BIOS (you'll switch it from AHCI to ATA). Search through BIOS until you find it. It will advise that you have to disable "Flash Cache" first, do this, and then set SATA mode to ATA instead of AHCI. Then, save your settings, reboot and install XP as usual. Once XP is installed, install the AHCI driver yourself via the file in the folder /AHCI/Lazy_Method. After this has been done successfully, you can go back into the BIOS and re-enable SATA AHCI mode and Flash Cache.