My daughter has a new pc and I can't find the wep key for her to get onto the web. Can I just change the wep key on the admin page to a new one and then add both her and my pc as new using this key?

I don't want to just try it cos if it doesn't work we will be without web access completely.

Thx

Yep, changing the WEP key to a new one then re-entering it on both connected PCs won't cause any problems.