I need some help! I have two computers in the house and an ipod touch.

I bought a wireless router and installed it on one computer. It seems to be working and it detected the ipod.

I go on the ipod and it also detects the wifi network but it won't connect to the internet?

Also the other computer I guess needs an external wifi card? That is what sony said, they are both sony vaio's.

I am just wondering why the ipod isn't connecting since it shows it finds the network?