FOSS gamedev and creative worlds

If I have started a game .... then decid that a mod would be nice in the and add them ... is there any way to get the mod to show up in the game I have already started or do I have to start a new game :o) thanks in advance for your help.

Just install the mod. If you type "/mods" in the chat of your game, you'll see a list. If the mod is in that list, it's active for that world. Some mods may change the world at the time when the map is generated; in your "old" world, you'll thus see their effects only if you go to territory you havn't been before.

Thanks Sokomine :o)

also, if you click "configure" on your world, you can select which mods you want, and which mods you don't

yeah mine are like that - any mapgen mod will only create new stuff when you get near an undefined chunk - in mine there is a message "generating [whatever] to [whatever]" but in others mapgen mods it may not have a message