VB.NET socket stream?

Hello, I would like to broadcast on the LAN a specific packet and wait for an answer from a device. This communication use an unique protocol, that's why I tested the communication with Wireshark, so I know exactly all the bytes what I want to broadcast, and I know how to decode the received packet.

My problem is, I don't know how to "push" out the bytes to the LAN, and how filter the traffic to know which packet the answer.

I'm familiar with VB.NET but from a whole different aspect, I made SQL handling programs, and reports. (crystal reports)