messed up my linksys router & can't connect to internet-need help

[wilbur]

Hello-I have a Linksys wrt54gl router with dd-wrt on it.
i have it hooked up to a cable modem.
i don't know much about inner workings of dd-wrt because someone else set it up for me.
i do know this: person who set it up was very knowledgeable and most of the time this router just plain works and works very well.
have had it for years but realized i was still using default username/password so today i went into router setup & changed that.
And now i can't connect to the internet at all using the router.
I am using direct connection to cable modem to post here.
I am using Win 7 64bit home premium os.
can anybody tell me what i'm doing wrong here.
I also changed my user/pass back to default just to see if that would work-no luck.
heading to work very soon so i will check back later and thanks in advance-i'm really pulling my hair out on this.

[Spools]

Just to be clear, you changed the login and password to the router or to the wireless access? Do you normally connect to the router wired or wirelessly?

[wilbur]

I thought that I was changing the login to the router but I'm not really sure. I have been using this wired to my main computer but was trying to get wireless to work, which is why I was messing with it.
I'll try to check on that login.

[wilbur]

ok - here's what happened. I actually was changing the login credentials that my ISP requires, not the router login. now,since I'm on cable I don't even need an ISP login, but I did when this router was set up a couple of yrs. ago & I had DSL. I tried to 'back out' of this login but I couldn't cause the router setup wouldn't let me-it kept saying 'you MUST enter a username'. It was giving me that message because it was set to PPPoE instead of DHCP Auto. Changed that & I'm back online again. Still haven't changed the router login, I think I'll wait until later to do that.
Spools, I thank you very much for asking me if I really changed the router login - that got me to take a closer look at my problem.
I do wonder why the router worked for the last 5 months using PPPoE.
I just got lucky on this. I still feel that I'm stumbling around blindly every time I have to dig into the settings on this thing.

[Spools]

Not a problem. There are plenty of helpful network people around here so feel free to ask questions. Sometimes we just need some perspective to figure things out.