New Touch user. Help!

[Geek Girl]

Hi.

Just got an HTC Touch and have questions.

When I tap on the envelope/messages icon as if to write a new text message, it automatically opens up in my Yahoo account and I then have to go into Options, Go To: 'Text Messages' (Edited to add: Duhhh, Ok, I found out that I was clicking on the WRONG icon...duhhh. that there is ANOTHER icon NEXT to this envelope icon..with what looks like a paper with lines on it..and THAT one takes me directly to my TEXT folder....soooorrry, guys, *blush*)

Well, I want it to automatically/default to go my TEXT messages, NEVER my Yahoo folder. In fact, I wish to DELETE the Yahoo Account from HTC Touch. How do I do this? (See my above add/edit, but I DO still want to at least KNOW how to DELETE my Yahoo..because if I don't want the $30.00 a month stuff, then I don't want my phone to accidentally check Yahoo, etc...)

And question on this Vision account. Is that the $30.00 a month internet account to where you can use your IE/email...stuff like this?

And I HAVE to have this to be able to download and use the smms program feature? (clarifying that this program WILL allow me to SEND-in a text-pictures with my HTC Touch to other cell phones, using their cell phone number, right?)

Look forward to your replies, thanks in advance!

Geek Girl