I have three pc's in the house which all connect to our wireless ADSL Sparkcom router. The downstairs pc is connected via a cable to the router. My son's applemac is wireless enabled and works fine.
My daughters pc uses a usb dongle to connect together with LAN software. This connection is very poor and it loses the connection or is extremely slow most of the time. I've used her pc downstairs in place of mine and it works fine. I've also used my laptop in her room and connected to the internet fine.
The only way to get the connection to work if it drops is to switch the router off and on again or restart her pc.
What can I do to improve the connection. Is it worthwhile inserting a PCI (?) card or is it a case of updating drivers, buying a new dongle or doing something within windows xp to improve the connection.