You can get the memory QVL by clicking on the Download tab, then choose XP as the OS and it'll appear as the only choice under QVL. Just get it the same way you get the manual and other files.
No idea why the other tab doesn't work - but it's something funny with the javascript! If you can't get it, let me now and I'll upload it to my site.
The QVL lists are generally not that helpful as they contain whatever RAM Asus happened to have on hand and tested with the board. The model numbers are often out of date or include memory really not suited to the board, with high voltage or often triple channel kits for dual channel computers, etc.
The list shows these for 1066 and 2GB size. I assume you're looking at putting 4GB (2x2GB) in this system?
2048MB MICRON Z9JKJ MICRON DS MT16HTF25664AY-1GAEVZES
2048MB MICRON Z9JKJ N/A DS MT16HTF25664AY-1GAEVZES
Micron RAM is sold under the Crucial brand in the US, no idea if you can find those part numbers.
Your system supports a max speed of 1066. And a native RAM voltage of 1.8V. Generally, you should choose RAM that runs at the max speed, has a low CL (latency) and low voltage (1.8V to 1.9V)
So, you're looking for 1066, CL=5 and 1.8-1.9V
Other considerations are whether you plan to overclock your system or install a cooler fan that might get in the way of taller height RAM with built-in heat spreaders.
Good place to start is Newegg.com. Even it you don't buy there, and they are a good source, they have a well-organized shopping area. This page shows only DDR2 RAM, speed 1066 and 4GB kits.
http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&N=2010170147%201052108080%201052315794%201052420643&name=DDR2%201066%20%28PC2%208500%29
You can reduce the list further to show only certain CL or voltages. This is CL=5 and 1.8V
http://www.newegg.com/Product/ProductList.aspx?Submit=ENE&N=2010170147%201052108080%201052315794%201052420643%201259916288%201052516065&name=5
Both of these are excellent high-quality RAM that should work fine in your system.