I have current work and clients already which I am simply billing through the corporation. I know of several successful smaller local IT companies, and in every instance they started as a partnership of good people. One thing to keep in mind is the psychology of teamwork. As a solution provider type business your only asset is your reputation, and you need to protect that reputation by delivering on anything that is committed in writing. Everyone needs to know and to voice their personal risk and hardship tolerance.
Large mismatches are the kiss of death.
The partnerships I have known that have blown apart did not address these issues up front. Examples of such activities also include attending user's groups, hosting user's groups, hosting local seminars for product companies, etc. Consider joining a Toastmaster's for the public speaking experience, if you have not done anything like this before. The fees are really cheap and you get to network with professionals and managers. It's helping me already.