Windows 7: Dual Boot Win7 & Winxp

I have a Gateway computer, 64 bit, DX4822-01, with Intel pentium E5300 Dual Core, 2.6GHZ each, 6GB ram, and 1TB HDD, running Windows 7 Home Premium x 64 bit.

I want to add Winxp Pro for a dual boot. What all do I need to know and what to watch out for to accomplish this? Is there any trouble to repartition drive C for enough space to add this?

Thank you!

Follow the steps in Method Two: Dual Boot Installation with Windows 7 and XP

Most modern SATA controller drivers are not in the XP CD so need to be added during install or slipstreamed into the XP CD: SATA Drivers - Load in Windows XP Setup on Dual Boot
SATA Drivers - Slipstream into Windows XP CD

If you have XP programs which won't work in Windows 7 try installing them in Windows 7's XP Compatibility Mode

Or try virtualizing XP within Windows 7 using freeware like Virtual Box, Virtual Player or VMWare. Much easier.

System Repair Disc - Create

Have you made the Gateway Recovery Disks?
Manual how to use Acer eRecovery Management here:
ftp://ftp.support.acer-euro.com/notebook/empowering_technology/NB%20ET2%20user's%20guide/Acer%20eRecovery%20Management%20English.pdf

You can Order Gateway Recovery Disks from here:
https://secure.tx.acer.com/RCDB/Main.aspx?brand=gateway
EMachine
https://secure.tx.acer.com/RCDB/SelectBrand.aspx