Bridging in Windows XP does not work properly with Wireless adapters

I'm going to add a few notes here concerning this workaround. It mostly is how mac addresses are seen to various devices.

The virtual machines will see the mac address of the miniport device on the host as the router. They will not see the router.

The router will see the mac address of the host and will not see the virtual machine at all.

This does not mean that the router is not assigning ip addresses though. Depending on your router model and firmware then it may only show one ip assignment per mac address (the usually the host machine) or it will show all of them. My Netgear will only show the host ip but still assigns to multiple machine with the same mac. My Linksys modified using the DD-WRT firmware will list all the ip addresses even if they are the same mac address. Even though this is occuring all the virtual machines as well as the host still have different mac addresses and therefore will not conflict.

This workaround does not work for the 2Wire Wireless Gateway modems. They will re-assign the same IP address back to the virtual machines and will result in an ip address conflict.

Technical correction:
Last sentence in the first reply says "...all the virtual machines as well as the host still have different mac addresses and therefore will not conflict."

This should actually say that "...all the virtual machines as well as the host still have different ip addresses and therefore will not conflict."

The mac addresses have to do with arp and are non-relevant here. The network bridge is doing arp proxying for this to work.