on closer look that is actually a pretty clean linux install. If you have a linksys wrt54g router you can also put the openwrt firmware on it and configure the dhcp settings so you really won't need a windows machine running tftpd32 or any other client.
Could just slap a computer together without any drives set the bios to pxe network boot and it is up and running in like 30 seconds
and crawling the directory of that howto gives you this url:
http://reilly.homeip.net/folding/
and there are some interesting clients there if you want to keep the hd in each system even