'... Great hackers also generally insist on using open source software. Not just because it's better, but because it gives them more control. Good hackers insist on control ...' ~ http://www.paulgraham.com/gh.html

you might run into problems ( '7. Choosing the Wrong Platform' ~ http://www.paulgraham.com/startupmistakes.html) and here (find people to work on it ~ Great Hackers, Ibid.).

Is this the server platform or client? The thing I don't get is also the extra cost in dollars. MS is not cheap.