PPCGeeks - hard keys and also a few ???'s (I'm a Noob)

On my mogul, when I first got it, on the Home Page, on the left side it said 'Calendar' and on the right side it said 'contacts.'

Now it says 'Email' on the left side and I don't know how to change it back to 'calendar' or is it customizable?

Also,another quick question(s):
1)I downloaded an SMS threaded chat and had the keys pretty big but now it will go to like this really small type and I don't know why and I always have to change it back to the bigger type.

2) Is there a downloadable threaded chat AND keyboard that work in conjunction w/eachother? I've downloaded a couple and the latest one is like a palm threaded chat(including the emiticons!), but when I bring up the keyboard, it blocks out the message and I have to close the keyboard to see what I've written.
*This is when I'm using the touch screen on front and not opening it up.)

3) Last one!!
I am trying for DEAR DEAR DEAR life to find a downloadable iPhone keyboard. Every touch keyboard I've downloaded(PMC Keyboard, Zoom Keyboard) the letters are too close together. The bubble type helps a little, but I want to be able to tap and go without having to see what letters I've typed, close it to make sure it says what I've wanted it to say, open it back up and retype etc. The SPB fullscrreen was ginormous and not my type. Any help or anyone know how to help me would be greatly appreciated.

Thanks...
oh, I love my phone. It's not perfect and has some minor flaws, but I love it!!!