My advise to you would be to tell your dean of students or whatever what you're doing, and find out if they are supportive. Whether they are supportive or not will only affect whether you are "on-campus" or "underground"

I would form your own group with own name and ritual. You might want to keep membership a secret for a while if your campus is anti-greek but rememember, the only type of college/university that can say "no" to any sort of greek life at all is a private one that receives no federal money at all. IF they do, then you have freedom of association. Even if you're "underground" people will probably know about you and want to join. After a semester or so my advise would be to affilate as an interest group/colony with an inter/national fraternity that is sympathetic to your cause.

Good luck.

To everyone else: telling someone to do a search or that this has been discussed before does not count as helping the new person.

Says you.

I would agree if the previous threads had no information in them. Those threads have plenty of useful information in them, had the OP chosen to read them. Why should we have to spoon feed him information that is already readily available? What kind of message does that send? "Don't do anything for yourself -- ask everyone around you to do things for you, and your organization will prosper."

I think not.