Help Needed, editing text

I need help editing text. I have looked on here and read but I am having huge trouble when it comes to changing letters in a word that is typed or changing letters after a word has been typed. On my pearl I used to be able to go back and change a letter to a different letter when using suretype, now I cant figure out how to do it with this thing.

Also, I cant find the SD card when in my media manager or on my phone itself. Everything is enabled but it does not show up in my manager to save files to.

**BUMP** This is the one and only thing that is driving me crazy right now....any answers will defintely help!

check the tips in http://forums.crackberry.com/f86/off...-thread-99665/ about how to move the cursor where you want. also, in landscape you can just click on the underlined word, and the suggestions will come up. Actually, it's easier if you turn on "spell check before send" option, and do all the changes at the end.