The router SEEMS to work fine with the desktop PC on the network connected with Ethernet cable, but perhaps the wireless part is faulty
However, I don't have the time or money to replace the router or wireless card as I'm on a very LIMITED income and any inconvenience I caused replacing the router would not go down very well with the other people on the networkTry borrowing a wireless networkcard from someone or borrow an entire computer with a wireless network card.

Make certain you test with the bare minimum, no security and no encryption.I'll TRY and borrow one, but I'm not sure tht anyone I know would have one, or let me borrow it if they did have oneI don't think you have much of a choice.

Although you could start from square one, set everything back to factory default settings and rebuild your wireless network ?

Make certain your RALink SOFTWARE isn't set to power saving mode, by the way.I'll try and borrow a wireless computer/notebook from someone...actually think I know someone who could help me out there
RALINK software in CAM (Constantly Awake Mode), not power saving
Anyway thanks for all the help, I'll try and get a wireless computer or notebook on loan, MAY not be able to get it for a few days or a week or two
Cheers
P.S. seems better again now...weirdAre there any devices that could be interfering?

Try using a different channel, each channel operates on a different frequency.No interfering devices nearby that I know of, will try a different frequency later