i have a linksys wrt54g 5.0 w/ddwrt firmware installed on it. i joined a network now i cant log into my router even w/ ethernet cable
Hello and welcome to Tom's Hardware Forums.
Have you tried resetting the router by pressing in the button on the back?
Make sure you're using the right address by checking in Command Prompt - type ipconfig and press Enter and the address you want will be described as the Default gateway. If you get to the login page, I believe the default login name is linksys and the password is blank.