Sorry, but there is no way to obtain it without the IP of the router if you can email me the IP I can try to crack the password. The way you need to find this out is to find the local hosts in your area. Preferably use this program.
Cain & Abel www.oxid.it/cain.html
if it says somthing about the firewall blocking some processes ignore it and continue.
Go to Connections on the left toolbar.
click on it.
click on the huge empty space
go to the top and look for the [+] and click it
once the IP of the router pops up message me it.