(PLM as opposed to QWERTY, ZAQ if you're left-handed )
While we're waiting for that virtual keyboard (and, uh, the pre itself) try this fun exercise:
1.) Turn your Treo/Blackberry/WiMo/etc. device with a portrait thumboard and turn 90 degrees and hold in desired typing hand.
* Added challenge: record your WPM and log in this thread.