So. Here's the setup:
DGL-4100
-> Wii
-> X360
-> PS3
-> DGS-2205 (gigabit switch in study)
*-> My PC
*-> Her PC
*-> DAP-1522
Now, we're on the 192.168.1.x domain, and I've already hooked my PC up directly to the DAP-1522 and switched its IP address. So now, I can connect to it through the switch. I've renamed it, set it to WPA2 with a passphrase, and should be set to go. However, I can't get my laptop, IPod touch, or any devices to see it. Also, the DGL-4100 doesn't list it under the DHCP clients, but as I've got the DAP-1522 set to a static IP of 192.168.1.50, I figure that isn't really a problem.
Help! I'm not a networking noob, but I am inexperienced when it comes to getting wireless working.