HTC touch pro.

[Icedgreece]

Well. My previous HTC touch pro was lost in a recent boating accident. I had some games and some apps on it, but nothing too complicated.

I had ordered another one from ebay, came in today. This phone is absolutely wonderful. It is unlocked, Windows Mobile 6.7 or something, unreleased. The guy who sold it had gotten all the upgrades from here, so this is why I am asking this here. I am sorry, because I am sure there is a thread on this already, but I have some other questions.

What is a ROM?
How do I use it?
What is flashing and how do I do it?
I have an unlocked phone, what can I do with it?
Where do I find apps (Games, themes, etc)
How do I install these apps?

Thank you for your time. I understand if I am breaking the rules or whatnot, but, I hope these can be answered.