Just to let you guys know that linksys has released the WRT54G Router source code! a couple of guys have started to add new features to the firmware. they include things like:

Support for VPN Server Build-in PPTP Support for DHCP Static Support for SNMP

There are vast amount of features that have been
added and the release notes below show the
ones done so far.

http://h.vu.wifi-box.net/wrt54g/cust_fw/WRT54G_2.00.8.1.wfb_wifi-box_Release_note.txt

http://wrt54g.sonycrx2xx.org/cust_fw/WRT54G_2.00.8.1.wfb_wifi-box_Release_note.txt

goto http://wrt54g.sonycrx2xx.org for more info.