Oleg's firmware contains ether-wake.
usage: ether-wake [-i <ifname>] [-p aa:bb:cc:dd[:ee:ff]] 00:11:22:33:44:55
This program generates and transmits a Wake-On-LAN (WOL) "Magic Packet",
used for restarting machines that have been soft-powered-down
(ACPI D3-warm state). It currently generates the standard AMD Magic Packet
format, with an optional password appended.
The single required parameter is the Ethernet MAC (station) address
of the machine to wake. This is typically retrieved with the 'arp'
program while the target machine is awake.
-b Send wake-up packet to the broadcast address.
-D Increase the debug level.
-i ifname Use interface IFNAME instead of the default 'eth0'.
-p <pw> Append the four or six byte password PW to the packet.
A password is only required for a few adapter types.
The password may be specified in ethernet hex format
or dotted decimal (Internet address)
You can write scripts where you remember the MAC adress of the desired PC ;-)
Edit: Sorry, this syntax is for an extended version of ether-wake I have installed on my WL-500gx. In Oleg's firmware busybox handles ether-wake.
BusyBox v1.01 (2006.01.07-10:53+0000) multi-call binary
Usage: ether-wake [-b] [-i iface] [-p aa:bb:cc:dd[:ee:ff]] MAC