Hi,
With Bridging.. u can run your PC in network without ip-address ..., means ur PC or NIC is recognized by hardware address..not ip
I did install and configure it in Linux ..............., when i worked with ebtables and honeynet technology...., but its 2 years back....... , i m not able to rememb much but its possible in it, For that you have to install bridge-utils rpm for that.........and after that u have to add the bridge with brctl cmmd.........
first install it and let me know .if u face any problem
Gaurav