You need a wireless bridge and a switch. Do you mean you have a gig-e switch?

cable-modem - wireless router in the bedroom.

~~ wireless signal ~~

wireless bridge - switch - wired devices in the office.

Instead of buying a wireless bridge and separate switch, look into DD-WRT and see if you can do this with a Linksys WRT54GL wireless router in the office instead. That will be cheaper than buying a wireless bridge. If 4 ports aren't enough, switches are cheap. I'm pretty sure you can do it with DD-WRT and any of the wireless routers that it runs on.

The other way to do it would be to add two powerline adpaters

switch - powerline adaptor - power outlet in the office

power outlet - powerline adaptor - router - cable modem in the bedroom

Powerline is supposed to be much faster than wireless G, probably better than N.

http://www.amazon.com/gp/product/B00...X0T0GCVQNTJD65


The other thing to do would be to have the cable company install a cable outlet in the office and just move the router into the office, which is probably where you want the best throughput anyway.

-David