lan or internet

...help plz =/? I recently bought a new computer and built it myself, my motherboard has a 2 build in network adapters they are "realtek RTL8168/8111" my MOBO is a EP45-UD3P made by Gigabyte. My operating system is Vista 64 Business. I loaded all the drivers from the CD that came with the MOBO...

how do i host a map on gmod for multi player. Of a map i edited over gmod... i only see maps that are pre loaded into the game... =/