used to have 4 pc wired on the router. Have just replaced with Netgeat WGR 614. Move one pc to the first floor and use wireless. it works fine,access the internet fine, but now those pcs downstairs(wired) cant access the one on wireless)upstairs) and visa versa.
If no joy with above, try posting this in the PCA Network forum: click here, AND a dedicated networking forum like: click here(you can use copy & paste to post in both to save yourself the trouble of re-typing). Please also state the OS(es) on the PCs. Good luck, G