Belkin F5D 7231-4
Working despite listed as incompatible, but only with a couple of settings changed. Using 128-bit WEP no problems.
Set wireless mode - 54g-LRS, Channel - 1, Protected Mode - ON
Router is version 1212uk, firmware 4.07.07
4 x PCs connected via ethernet,
3 x DS working fine
PSP working fine
Wii took ages but changing the settings as shown worked perfectly.