Users Accounts with Airport....... Help Please!!!

I just recently purchased an older g5 dual 1.8. Instead of doing a erase and install I opted for the manual add and delete of the old user. I was able to get rid of all of his old information, folders etc.... Except for Airport Extreme. When I set up to share my Internet Connection it shows his old name on the available local network. I changed this under my user Id and when I am logged in under my profile the airport shows up with the name I changed it to.

The problem...... When my wife logs in from her laptop it still comes up with the old owners name. How do I correct this??? I believe the problem is only with Airport the Computer name was changed.