as i presented here for non-rooters, you can install the HTC IME keyboard:
Now, if you move the HTC_IME to /system/apps you can install some great keyboard themes via metamorph....just watch this daily updated thread:
[Morphs] HTC_IME High Res v19 skins! Updated Mar-28, new skin! - xda-developers
Have Fun....and make sure you READ ALL INSTRUCTIONS on the linked thread!