There's an app to change the keyboard called Better Keyboard but it's a paid app. If you can't find what you want on the Market for some reason you can search for that app on 4shared.com
Some cool apps you should also download are....
1. ChompSMS (a messaging app like the iPhone. Make it your default)
2. SMS PopUp (more custom options for Text messages such as individual notification sounds and vibration lenghts)
3. Spare Parts (makes your phone individual windows open faster)
4. Tone Picker (selct music from your SD card as ringtones or notification sounds)
5. Google Voice (you have to have a GV number already in order to make this app work)
6. Mabilo Ringtones (download ringtones)
7. Ringdroid (edit music tracks and make them ringtones)
8. aContacts (make this your default Contacts app)
9. Assistant (handle all your bills from this app)
10. ASTRO (file explorer, you need this!)
11. Backgrounds (name says it all)
12. Math Alarm Clock (THIS WILL WAKE YOU UP. IT JUST WONT STOP RINGING UNLESS U DO THE MATH)
13. Video Safe (hide your videos in this app with a password)
14. Photo Safe or Photo Vault (hide your pics with a password)
15. ColorNote (notes wit color)
16. Documents to Go (WORD office type apps)
17. Bump (like bluetooth but much coooler)
18. Advanced Task Killer Free (kill apps you dont want open and ignore ones you never want to see open)
19. Better Cut (you can change the icon of an app using this app, download icon packs for free)
20. PicSay (like photoshop for you phone)
21. CauseWorld (be nice and donate!)
Now some games i loooooove
1. Nintaii
2. Shoot u
3. Tangram Pro
4. Postal Babes
5. Puzzle Blox
6. Parking Break
7. Gem Miner: Dig Deeper
8. Balloon Popper
9. Action Potato
10. Mystique Chapter 1 and Chapter 2
11.Papi Jump
12. Family Guy: uncensored