I have a Dell 948 all in one printer in my office on a wireless network.  Each time, I setup a new computer, the Dell 948 setup wizard asks me to give the computer a name to I can select which computer to send a document to.

I have replaced several computers with new ones now and given them new names that display on the Dell 948 with no problem.  However, the old computer names are still listed there as well even though they no longer exist on the network.  How can I delete or remove these old computer names from the Dell 948 display?