I fully endorse Mr Clancy's review. This is the easiest modem I've ever used. I've also had another modem that uses the same sort of Connexant system, but it's about the size of a paperback and in a boring beige, not the cute black box (about the size of a pack of cards) that the Zoom one is. It's dead easy to set up: just plug it in, put in the CD and follow the instructions to install the drivers. You should then see two shortcuts on your desktop. Double-click on the one marked 'Zoom PPP DSL' enter the username and password your ISP will have given you, and in the 'phone number' box type in either several zeros, or "0.38", and press 'Dial'. It should connect almost straightaway. The other shortcut is to the control panel, which is really handy, as if there is a problem, it'll tell you whether it's the modem, the line, or the remote computer.
I'm really surprised that one of the reviewers has found it takes a long time to appear after booting up - on mine, it's one of the first things to load up, and I've usually connected by the time everthing else has loaded. As for noise, that can happen with other makes of modem too, if you have extensions and you don't have a microfilter in each one of them (supposedly, you only need one filter, in the socket you're using, but trust me, that isn't always the case - if you get noise, just stick microfilters in all the phone sockets, even if they don't have phones in them and Bob will be your mother's brother).
Great product. I've recommended it to several friends, and none of them have had any problems. It's great for broadband novices, because it's so easy to use.