To view security on the Linksys, you need to be plugged directly into the router with a computer into 1 2 3 etc. (pick one) You can't do it over wireless you NEED to be plugged in.
When you are sure that is correct... proceed to..
1. Open internet explorer and just erase what is in the address bar. Go to this address http://192.168.1.1 (just type that, don't type www or anything) press enter.
2. You will get a username/password XXXXX Leave the 1st (username) field blank, in the 2nd (password) field type admin. And press Ok.
3. You will now be inside the Linksys Router.
4. Up top click Wireless.
5. Just below it click wireless security.
HERE is where you can view the password.