This is kinda complex and I'm in a rush so you get the fast answer.
You can't do that with what you have. Wireless routers and access points are normally made to talk to wireless clients, not other routers or access points. The DLink DI-514 is a very simple wireless router and can only act as a wireless router. Same with your WRT54G using the stock firmware.
However, the WRT54G can use replacement firmware such as Sveasoft Alchemy. This adds additional features including WDS and client mode. If you configure the WRT54G to client mode, it will see and connect to the DI-514 and do roughly what you want. It can also bridge more than one MAC address allowing you to plug in more than one computah into the WRT54G.
I'm too lazy to explain WDS but it's a similar option. The catch is that you will need to replace your DI-514 with another WRT54G to use WDS. See: |