Hi Newbie,
Given what you have been doing in sales the transition may be a little difficult at first. If I read your experience correctly, you haven't really worked in a technical role too much as a fulltime job (two years management in product developement - I'm assuming the product wasn't a system...I could be wrong).
Your challenge is going to be getting that first position.
First, you should be looking for a Jr. Analyst role. You have a lot of transferrable skills and you can probably climb the ranks rather quickly once you get into that first position, but right now I think you will be hard pressed to land a more senior role.
You should play up all of your eduction, the interships and any other technical knowledge you have. Also specifically draw attention to your transferrable skills. You must be a good communicator if you have been working in sales and management.
Finally, a requirements gathering course could really help catch the eye of a hiring manager.