lurkist,
but a broadband modem? never heard of one, never seen one. Am I looking in the wrong places?
Some broadband companies actually lease them to you when you get an account, while others you can purchase your own. For instance, up here in Canada, Sympatico won't allow you to purchase your own modem. The lease of the modem is included in your monthly fee, and you must return it once you leave Sympatico.
So if you were to get broadband in your area, I'd recommend you call the company behind the service first to see what their rules are for modems. There's no sense getting a modem if they won't allow you to use it.
There are pros and cons to both scenarios. If you own the modem, then it's yours, but if it breaks once your warranty is over, you're screwed. And if you lease the modem from the ISP, it might not be yours, but if it breaks, they'll replace it at no charge.
Personally, I use an Ariadne II and Miami Deluxe to connect to the leased modem. They've been working like a charm for three years. Two friends of mine swear by the X-Surf as an ethernet card. It usually goes for about $100 US.
AmiGod