i downloaded a map and i wana create a game it only works for LAN but for internet when i use it says CD key Invalid
can some1 please help me

In order to install the Halo CE (Custom Edition) game you MUST own a copy of the Halo PC Retail version of the game and have the CD Product Key number which is printed on the yellow sticker labeled "Product Key". If you do not have the correct Halo PC CD Key you will not be able to install or run the game. Installing the Halo CE game will not affect or change your Halo PC Game they can both run on the same computer.

Purchase the Halo PC game:
http://www.google.com/products?q=Halo+Combat+Evolved+%2F+PC+&show=dd


READ THE RULES:
http://forum.halomaps.org/index.cfm%3Fpage=topic&topicID=2979

Cardinal Rules: Violating these rules will get you banned:

1. Do NOT discuss or promote the use of illegally obtained versions of any company's games or software. Anything illegal, even borderline, will be deleted. Any post discussing or suggesting the hacking of any company's software will result in an immediate banning. Any post discussing or suggesting the theft of any software, commercial or otherwise, from any company will result in an immediate banning. Posting links to hacked stolen or cracked software will get you banned. "Jokes" about hacking or stealing may get you banned.

It is not allowed in these forums. There is no argument and no excuse. It is not allowed period.

so tht means i cant create a game for internet?

IT MEANS TO go BUY a copy of the game and not pirate it.