Your daughter may find it makes sense to sign up with a broadband provider that supplies a wifi router in the contract.
I recently signed up to an 18 month contract with BT for their mid-range service - 8Gb/month I think. £14.99/month for 6 months, then £23.99.
They gave me a new wifi router with a port for a VoIP line (with standard number) and it came with WEP all set up. All we had to do was unpack and set up (very easy, and fully documented) and then fire up the PCs and enter the encryption key that was printed on the router's label.