I am glad it helped. The Shibby build I recommended uses a different wireless driver and indeed it has few extra features. You can safely put the Tx power to 71mW for the wireless and even 150mW but i would recommend a 71mW Tx power for the WRT54GL in general. Just a few more tips to get most out of your WRT54GL.
1. Raise the clock on the CPU to 225Mhz. Add a small alumunium heatsink just for your sentiments :D Will be fine without it but go ahead and add one.
2. Change the DNS servers from the default ISP to OpenDNS and Google DNS. Faster host name lookups will give you faster page loads.
3. Disable SSH and Telnet from starting up when the router boots. If you need to go CLI then you can start them manually from the GUI. This saves you some RAM as the GL has 16MB of RAM
4. Use NAT-PMP over uPNP as it gives little more security.
5. Remove the default port forwards. Add yours own if you need.
The last time i checked the uptime on my WRT54GL, it was 4 and a half months with those settings. :)
Have a great day!
I learn something new from everyone everyday. A hardware and software hacker .
My Routers: Buffalo WHR HP G54, WRT54G-TM, WRT54GL, ASUS RT N16, DLINK DIR600, Linksys E3200, Tplink 1043ND, ASUS RT N13B, Alfa R36