[How do I add a new version to my modpack that people can update to?]

I just created a modpack, and I'm not sure how to add new versions. I've added 2 mods, and want to let people update without just dropping it in the zip and them getting it the next time they think to check for an update or something. Is there not a way to do it for custom modpacks? I can't find any, that's for sure.

[Tekkit Multiplayer SkyBlockz]

^{I know the title is wrong, I'm working on a new logo now, It'll be changed soon.}

I created a tekkit multiplayer skyblock-like map. I can't post any pictures now, but i will have some up soon. The official thread can be found here:

http://www.minecraftforum.net/topic/1108284-survtechnic-pack-6-custom-map-alpha-testers-wanted/page__fromsearch__1

However, if you don't want to visit the forums, I've Included the download link here:

beecock'd

The map is currently in alpha stage, although i have huge plans for the first beta version of it. Also, the chances of getting a reply are a lot greater if you post on the Minecraft forums, and not the Technic forums.

Hope you enjoy my map,

AlexThe18709