Thank you Prof Simmons!
This is a great simulator and it is so light weight!!!
I'm from a software background. Just saw some projects done with Audrino and developed some interest on it.
So I decided to learn with a simulator. When I'm confident enough to do something real, I'll go ahead and purchase the items.
But it was hard to find a good free simulator for Audrino. This is the best I got so far.
Thank you so much. I really appreciate your effort for this wonderful simulator! 
Wish you all the best and hope you will improve this a lot better and powerful than it already is.