it depends on what server your going on and your connection speed, unless the download just stop and doesn't move after 5mins or so.
If you want to know your connection speed, try this site:
http://www.speedtest.net
the map should automatically save it in your server directory:
Example: MTA San Andreas 1.x/server/mod/deathmatch/resources
then in there you should find your map by the name.
ok, in the console type in "addaccount [your username], [your password]", then in the ACL.xml put this in the Admin group:
<object name="user.YOUR_USERNAME" />
after, try to login then, if anything happens post it here.
If you have a router, you could put your LAN ip in the mtaconfig.conf file and when you add your server to game-moniter.com, you could use your external ip, Which solid said you could find it at http://whatismyip.com
This happened to me before, but it works.