I can't Download Custom maps HELP!

I can't Download Custom maps. Its just locks up and boots me from the game any ideas?

Have you tried manually downloading them from http://h2v.halomaps.org/ and installing them to the maps folder (instructions are at the website).

Um i only did once. Usually i cant find the maps though

have you let h2v and its ports through your windows firewall and your router firewall?

lol um no I havn't what Are the ports?

I've never had a problem with that before but lately it seems live has been acting up. Now i can't DL maps either but it don't bother me. If you can't download a map ingame just look at halomaps.org or just google and download it that way. Then put it in your custom maps folder.
"c:\users\"username"\documents\my games\halo2\maps"
I think that's the folder it's been a while.

Or maybe my firewall is blocking it also on my new router. lol