Me again. Trying to clarify my question. It's not clear from the documentation whether I need to have a WebDAV server url to make it work. I thought I could access my zotero account from another computer (say, my work laptop) if I had zotero installed on it also (which I do), just by accessing my library online in "the cloud." It's not clear to me whether I need to scare up some WebDAV space in order to make this work, or whether WebDAV is just a nifty optional accessory for people who want to go further with sync capability.