[DubaiSis]

Do you mean colonize an NPC chapter at your school or starting a local? Those are two VERY different animals. If your campus already has a/some NPC sororities on campus and you just want to add an additional, you're SOL if the campus isn't open to it. And in general, if there is need for an additional chapter, they will be supportive (there are cases where this is not true but I think it's fair as a generalization). If you want to start a new sorority because you went through rush and those hags didn't pick you, again, you're SOL. Starting your own is almost guaranteed to fail, although you can probably do that without any campus approval. You just also will not get any support from them.

If you mean an NPHC, multi-cultural, service, major-specific or non-collegiate, those are all handled very differently and there are women who could probably help explain the process but you have to share a lot more information. And by the way, there is probably already a thread or several that explains how it works.