Alright my brother was trying to get a game to work and was fucking with port forwarding. After he port forwarded or whatever my wireless internets stopped working and when we tried to connect to our modem it said Require user credentials and it asked for a user name and password.But when I plug in my cable it works fine.
I was wondering if any of you know how to fix this.
Also sorry for any grammar mistakes I made i'm trying to get this to work.

Call you ISP and get your UN/PSWD, if you dont know them.
Entering them once should solve your problem.

I just moved to Brazil and can't speak portuguese my whole family that can is sleeping.

http://translate.google.com/

Ftw.

Lol. Wait till they wake up?

Atleast try to help him, not suggest for his relatives to wake up.

Connecting to wireless or connecting to the modem to change settings?
I guess the last because wireless doesn't ask for usernames as far as I know.
Could be username admin password admin or just username admin and no pass. Those are quite common factory settings, if your parents have changed it then I can't help.
But the best way would be to wait for them to wake up if that doesn't work.
Also I'd say that atleast some of the ISP support people speak english.

Fixed.There was a little reset button on my modem I had to hit.^^