this tutorial is work in progress.I decided to post it until I had time to clean it up. If you have any questions, please use the Forums! 

WARNING: I take NO responsibility for you bricking your AIGO with the following techniques. AIGO XP is still in Beta format, therefore, things can go wrong.
This is the current way to install XP on an AIGO P886. I would hope that a less complex process will be made available by AIGO in the near future.

Lets get started!
Download AIGO XP Files first:
BIOS, GPS & Touchscreen drivers
http://www.mediafire.com/?zjjzzijiqf1

&

Audio Drivers: http://www.mediafire.com/?mkzmiqyx2ny (these are realtek drivers from another UMPC)  Once again...at your own risk :)

NOTE: I used a USB HUB during the install so I could have a mouse and keyboard attached along with the USB drive (this makes it MUCH easier, trust me!)

FLASH YOUR BIOS------------------------------------
make sure your power supply is connected.

Grab these files:
files.extremeoverclocking.com/file.php?f=197

files.extremeoverclocking.com/file.php?f=196

The two files above will allow you to create a bootable USB drive with win98 system files.

After you create this disk, copy the BIOS files to the USB drive.

Insert the USB drive and boot your Aigo

at the command prompt, type 'flash.bat' to execute the flashing utility

Your Bios is now flashed!

NOTE: I could no longer boot an AIGO recovery USB drive after doing this.

CREATE USB XP INSTALL-----------------------------
Make sure you have your XP license ready!

Follow this guide after you flash your BIOS to install XP using USB:

Some of you Might not need to do this if your XP cd boots without crashing. If this is the case, your a lucky person :)
http://www.vandomburg.net/installing-windows-xp-from-usb/

This should get you all the way through the install process of XP

INSTALL DRIVERS----------------------------------

Install your Touchscreen drivers next.
Install your GPS drivers
Install Audio Drivers