Just got a brand new cable for the 600 and my laptop is not recongnizing. I am running the latest version of Tiger. When I plug in other things through the USB, it is fine, but for some reason the cable isn't working correctly...although, I am able to sync to the palm desktop (latest version) and charge on my laptop but I would like to sync with my laptop's ical and address book with the treo's datebook and contacts. any advice?