Hi Guys and thank you for your help in advance.

Here is my situation:

Product: Linksys WRT54G V2

1. It boots fine.
2. I can ping.
3. Reset switch appears to work.
4. Tried all hard reset methods.
5. SSID is now at linksysxx

I am trying to load OpenWRT firmware via tftp, but it asks for a password. I have not tried serial or jtag yet.

I can get to the login page, but every known combination of username & password; username & no password; no username & password does not give me access.

I will try any suggestions.

A few questions:
1. is the router actually running openwrt at this moment?
1a. if it is, did you telnet into it and set a password (passwd)
1b. if it isn't, then it isn't an openwrt issue, and you may get better answers from a dedicated WRT54G board.
2. if it still has lynksys FW, then have you tried via the web interface: http://wiki.openwrt.org/toh/linksys/wrt54g
3. there is an issue with macs (maybe  others): see troubleshooting here: http://wiki.openwrt.org/doc/howto/generic.flashing.tftp

I have no idea as to what firmware is currently loaded. I bought it on an auction site as is.  I assume Openwrt is on it.