My original MSI PC54G2 PCI card drivers came with AP mode (Access Point, via right-clicking icon in bottom-right) inclusive. It wasn't necessary to do/use anything else other than to bridge my LAN and Wireless connection (select them both in Network Connections -> right-click -> Bridge). As for the 52100 error, I had to disable my firewall (Kerio Personal Firewall) to let the DS connect to the Nintendo server. Anyone know how I might be able to keep my firewall up while I play online? Not quite show which program/connection to enable traffic.