Got one too, and I am surfing via a Terminal Service connection through my home LAN. Still pretty darn slow, though.
Ok, here's how to install:
Download drivers from here: http://www.sierrawireless.com/SupportDownload/AC510s_HPCpro.html
While connected via Activesync, run the installation program. You will get an error stating that the device is not supported. That's ok, just note where you installed the files on your PC, probably something like: "C:\Program Files\Microsoft ActiveSync\AirCard 510 Handheld PC Pro for Sprint"
From that directory, locate the file "AirCard 510 Handheld PC Pro for Sprint.HPCPro_4000.cab" and copy it to a temporary directory on your ePods.
Double click the .cab file on your ePods and it will begin to install. You will get another warning that the device is not supported but ignore it again, and follow the prompts.
Install your Aircard, and it should be detected properly.
Hope this helps. Oh, and I'm fairly certain that you need to run the firmware upgrade from a laptop first. It's located here: http://www.sierrawireless.com/SupportDownload/firmwareAC510.html