Hello -- any Zoom H2 digital audio recorder owners out there?

I just bought a Zoom H2 digital audio recorder. It came with a 1GB SD card.

When I hook up the USB cable from the H2 to my ibook, nothing mounts on the ibook, so i can't transfer files from the Zoom's HD card to the computer.

So I visited Zoom's site. They have a list of software versions (or is it firmware? I'm not sure how they're categorizing it) but nothing clearly shows which version would work with 10.4.11.

There is one version that is described as having been updated to work with system 10.5 but I'm cautious about downloading that for fear I'll load it into the SD card, then it won't work and then I'm screwed.

Also while it tells you to load the software (aka firmware) onto the SD card, there are no instructions on how to do that.

Add to this the fact that I don't have a card reader. (Although i read a forum in which someone said they stuck the SD card into their digital camera, hooked it up to their Mac and the SD icon mounted on their screen, to which they then dragged the firmware icon, and loaded it fine.)

I am quickly discovering that the Zoom support is not great. But that fact aside, anyone know which version of the firmware would be right for me to put on that SD card? And am i right that I actually need a card reader (or cleverly substituted camera) to load the card?

Thanks very much.