D-Link Dir-615 as Wireless AP?

My Layout:
Room 1:
Cable Modem ->- D-Link WBR-2310 (Wireless G) ->- Computer A

Room 2:
D-Link DIR-615 (Wireless N) ->- Computer B & PS3

What I’m Trying to do:
Use the router in Room 2 as a Wireless Access Point to connect to the router in Room 1 and give Computer B and PS3 Internet Access.

Limitations:
Running a wire is not an option, but the Routers can be swapped if necessary.