oooooh.. I imagine you're referring to your WIFI password? (for future reference, write it on a piece of tape on the bottom of the router in case you forget). You have a couple options though. If you can access the router, you can reset the password. In a worst case scenario, you can always do a hard reset of the router as well. You MIGHT be able to see the password IN the router though most times they're obscured by *****
It's usually not too hard. Depending on the brand of router. Access if from a computer. It's usually like enter a IP address of 192.168.1.1 then enter the default user name, usually "admin" without the quotes. The default password is usually "admin" or "password" or even blank. If you know what your computers IP is on your home network, you will know what the IP of the router is. Example: if your computer IP is 192.168.2.100. then 192.168.2.1 would most likely be the routers IP address.
My Airport Extreme has a reset button as well as my cable modem.
I reset everything last week as my wifi slowed to an unbearable crawl. Doing a hard reset using the reset button on the back, allowed my speeds back. With that I also had to reset all passwords and names.
I found out that it has to be 8 digit character on the iPhone to give me the option to join. I tried password and it didn't work. I turned off and reset the router and that didn't work either. Still lost.
Password is the default password & admin is the default login for the router itself for Netgear. You will probably have to re-set it up or if you can get into your wifi settings it will show the password.
Resetting the router is the last step. I wouldn't do that until I've exhausted the options of getting inside and looking around for the password for the Wifi. Mainly, because resetting the router will wipe out ALL your settings and sometimes you don't want to do that unless you know what you need to re-enter once you're in. Does your laptop connect to it? It may also be saved in the Laptop under wireless network settings. But to answer your question about where to enter that IP address. Open up Safari, Chrome, or Internet Explorer. Instead of entering www.something... just enter the 192.168.2.1 A box should pop up asking your user name and password if you're using the right address.