So I downloaded the bits from MSDN, and dropped it on my Eee.  The process just couldn’t be easier.

1. Start with a 4 GB USB memory stick.  Partition it with a single primary partition, formatted to FAT32.  Then copy the contents of the Windows 7 disk onto that stick.
2. Reboot your Eee.  Press F2 to go into the BIOS setup, and disable fast boot.  Reboot again.  Press ESC to boot to the USB stick.
3. Perform the Windows 7 setup. 
4. Boot into Windows 7.  It will recognize every piece of hardware except for the ACPI device.
5. Install the latest Intel graphics driver (Windows 7 RC version found here).  This is required for the ACPI driver to function properly.
6. Install the ACPI driver from Asus, found here under “ATK.”
7. Enjoy Windows 7 goodness!