I know you can import it into MultiMC. I don't know about Curse launcher.Hmmm...I wonder if I could download it from ATL and then import it as a new profile into Curse. That doesn't seem too hard. I read through the description and the mod listing and really liked how it sounded. For those of you reading this that aren't me or @ShneekeyTheLost, here's the link to his modpack. (You should really link the image in your signature to the pack! )
There's going to be some significant changes in ShneekeyCraft in the coming weeks. With Agricraft having an unstable alpha, Botania making an appearance as an optional mod, and a few other under-the-hood changes, the new year is going to be a big change from the pack as it stands now. I'm hoping to get some kind of oregen mod that does what I actually want it to do, which when combined with RTG, will provide you a truly epic world to explore and have fun in.