Mark, you might want to try
zLauncher. It does a lot of things, but one of my most favorite is moving applications between the card in the device. Its very handy to keep many apps stored on the card with shortcuts built into the device. Plus, it does a great job of organizing your Treo interface, and is a great file manager. It does a lot for $20.00!
You can also customize the look, and there are several themes available to choose from. Its one of my favorite applications for the Treo.