Kim, had in the past looked into the requirements of establishing a nonprofit 501c corporation for issues relating to socal problems. I can look into it again, if the support is there. It seems to me that there were some (business) law students...maybe from colorado (I can't remember-moyamoya strikes again) that were willing to assist. I also have some professional associates that have started very successful non-profits and can discuss this with them. However, there needs to be the support. It's ALOT of work. You almost need to designate your board of directors, pro tempore, to be in charge of getting this off the ground! I have several years experience with budgeting (with federal dollars) and understand direct and indirect cost, etc. Do we have any accountants on here? Others with professional experience with NPO's etc. Dr.'s with experience with MMD, lawyers, etc.
http://www.ncstac.org/content/materials/501c3.pdf
This is a very informative pdf doc. relating to what you are talking about. Others are also readily available on the internet.
Once a 501c3 has been established, (Or tenative plans are made for one) then you have to look at what funds to seek under the unbrella of the organization, is it incorporated, etc.
If the goal is educational, that will set some parameters, etc. Keep me posted on your progress and indication of support.
what do you propose these t-shirt's say? If selling t-shirts is the starting point of your fundraising?
(Although I belive fundraising ideas would come "after" establishment of goals, objectives, and timelines for the foundation.)
If you can identify a core group of key stakeholders for this proposed foundation, who are willing to work COLLABORATIVELY, it could be done. By collaboratively I mean everyone coming to the table brings something: education (in MM, law, budgets, ovesight, etc), experience (personal or professional) , personal investment (time, research, staff, statistics), financial resources (direct and indirect, monetary and in-kind), investment of time (personal time, staff,etc), etc.
Perhaps this is much more than you meant...LOL, I can get carried away!
If you are merely talking about selling t-shirts, you could sell them on your own and donate your profit to some other non-profit [ex. non-profit hospital that researches MM and still probably (not a tax lawyer) deduct the income on your taxes as a charitable donation].
At any rate, many NPO's have been created for similar reasons and we would not be re-inventing the wheel here, just needs a time commitment, etc

Keep me posted!!