If anyone is interested.....
On the above advice, I bought a Netgear DG834GT wireless router (a developement on the DG834G) and a Netgear WG111T Wireless USB 2.0 Adapter from Transparent Communications, all for £116.
The installation proved a nightmare as expected - though mainly because of a faulty cable. I spent just over an hour on the phone with a very helpful Indian gentleman - who answered the helpline number very quickly.
The laptop now works throughout Flypro Towers, with only a slight diminution of signal when in the furthest dungeon!
I'm very pleased, and thanks for the advice.............now, if I can just get the laptop to print from the main computer printer......
