Where should I begin? (Score 1)

I think I have a great idea for a company that creates a product and provides services - the product would be build on largely on Open Source components and would be largely open-sourced itself (Similar to how IBM WSAD is built on Eclipse). I have a CS background but no MBA / startup experience. What are next steps do you recommend (e.g., books to read, people to contact, plans to formulate) etc. Thanks! -Frank