Vista Tutorial - Netorking Laptop with Vista with Desktop with XP

I have two desktops both running XP. One is a direct cable connection, the
other is a wireless connection via a router connected to the cable
connection. It the past, I had never tried to network them.

I recently purchase a Gatway laptop with Vista and need to network it with
the desktops. The network from the laptop worked fine at first. However, the
two desktops were note networked to each other. If followed the instruction
to network them and created a "Network Bridge" on both. Not the two desktop
are networked but the Laptop running Vista doesn't recogize either. I tried
deleting the Network Bridge and it still doesn't recongnise either laptop.