Please stop the SMS-speak!
Is it really so hard to write "are" and "your" and "u" properly? You're not on a mobile phone now - there is no excuse (other than laziness) for writing "r" and "ur" and "u"

If you are entering a contest, you will ceratinly lose points if you write-up your report in this style - so start practising now!

You say it is a microsoft.net contest.
As has already been pointed out to you several times, microsoft.net has absolutely nothing whatsoever to do with microcontrollers at all.
Therefore, please explain why you think any microcontroller development is going to gain you any points at all in this microsoft.net contest?!.

Surely, for a microsoft.net contest the sensors are merely peripherals - so developing your own will gain you nothing in terms of the microsoft.net contest?!

Surely you would be far better off to use ready-made, off-the-shelf interface modules, and concentrate on the microsoft.net part of this microsoft.net contest?!.