I saw a new version of Pocket Mechanic on PocketGear this morning. It's supposed to support more storage cards and have speead improvements, according to the Pocket Gear site. You can download it here:
http://www.pocketgear.com/software_detail.asp?id=12178
Beware: After installing it over my previous version (1.49), my device did a hard-reset. Fortunately, I backed-up yesterday.