hey spartan! Just a heads up, the minecraft multiplayer servers are down right now and have been for a short while. hopefully they'll be up soon..
http://www.reddit.com/r/Minecraft/comments/zl0gv/dont_panic_minecraft_multiplayer_is_down_its_not/
^thead talking about it being down
http://help.mojang.com/
^actual webpage being discused (not working for me )
also on the reddit.com/r/minecraft page, on the side bar they have a little service status list (the five redstone lamps) if you cant get the help.mojang page to work. Right now it says that session.minecraft.net is down, which is whats preventing you from connecting to the server.. I think X)