Having Trouble Using Phone as Storage Device with Keyboard Dock

[bonanzabucks]

OK, so I figured out you can charge your phone using the keyboard dock, and that's really awesome. I tried putting the phone in USB storage mode so I could potentially transfer files from my FT to my phone. While the phone switched to the USB storage mode, my TF wasn't able to pick it up. Is there something I need to do with the phone or TF to allow it to synch? It would be a really useful tool for me because aside from games, my TF has really replaced my notebook and PC. I tried using a USB stick with my TF and it works like a charm.

If it helps, I have a Samsung Epic 4G (Galaxy S) running Android 2.2 and it's rooted. And I have the 16 Gig version of the TF with a 16 Gig Micro SD card there.

Thanks!

Just adding something here. Do I need to install any software onto my TF? If so, how and where?