I have a linksys for my computer and labtop my daughter needs a network key to get on her laptop where do i find this number.

I am going to assume that you have a Linksys wireless router connected to your computer.

The network key is set in the router by using it's set-up page. Usually, you type in a 26 character code or a text string that is used to form the key.
After setting up the router, you turn on the laptop, scan for available networks, and select yours. Then you enter the network key, which will be exactly same as that you entered into the router setup.

If you are having trouble connecting from the laptop, I suggest you first try setting up the wireless router to use no encryption, just to make sure the laptop can find the network. Once this has been established, activate the security features.

FW