Standard my WRT54G v2 has no configuration settings for this.
An option is to flash an Open Source firmware from OpenWRT.
This is an ASCII art for what WDS can be useful.
/ - - - Wireless Clients
INTERNET-----WRT54G_1- - - - - -WRT54G_2 - - - - - Wireless Clients
| | | | | | | |
4 clients 4 clients
----- Cable link
- - - Wlan link
With WDS you can connect wireless clients to all APs