It's fairly easy, feel free to email me if you have questions. Though I've noticed a modpack wich fancy things really adds to the experience (playing with my younger brother and sister) as in vanilla you're fairly limited when it comes to decoration and ways-to-go. Hosting a modpack trough technicpack [1] is basically loading the modpack and afterwards moving the folder to the server and running it over there.

[1]: http://www.technicpack.net/modpack/list