As the others have already stated, you are better off just using the editor offline. I remember when I first began mapping three years ago (-sniff- time goes by so quick) and after a few months all I wanted to do was 'be part of a mod team'. Why? Because mod teams are the highlight of Half-Life editing. I always saw mod teams as that sort of prize you get if you actually took the time to learn to code, model, map, or do anything else that would be relevant to the team. But as time went forward my eyes began to open more and more and I understood that being on a mod team isn't just to 'get your stuff onto the Internet so you will become famous' - its about working with fellow non-profit developers on something that isn't rushed or hindered by publishing companies (ie: having to cut games features because the game missed its ship date) and something that is truly made by people who are so passionate about games that they took it upon themselves to learn how to create them; just so they can make that special game they've always had in their head. Just like they said, stick to mapping on your own and eventually you will notice that its just as good as mapping for a mod team, and one day when you are adept enough to join one you will have the self satisfaction of knowing that you struggled to reach the position you are in, and you are worthy of the spot.

*cs:s!!*

/rant