from the above statement, i have understood that your daughter lap top is not going online. but you are able to see your network name.after connecting to your network.. still not able to go online.
step 1: remove the preferred networks from the lap top and try connecting to your network.
the steps to remove preferred networks.
-->click on start.
-->go to control panel.
-->double click on network connection.
-->double click on network and sharing center.
-->On the left hand side of the screen select "Manage wireless networks"
-->In the below Screen all the Wireless N/Ws which are in range will be listed.
-->To delete the wireless N/Ws, select the Wireless N/Ws & click on Remove which will remove that particular N/W. This is the Preferred N/Ws in Win Vista
-->make sure prefeered network is blank and exit out from all the windows.
-->then click on start menu.
-->click on "connect to".
-->it will show up your network name.
-->connect to your network by entering wep key.
-->after it get connected.. check the ip address and default gateway of the lap top.
-->if ip address and default gateway is in the range of router.
-->surely you will be able go online.