Webex uses a subscription-based tool to allow remote access across computers, and at Macworld they were talking about Mac-to-PC friendliness. Scott had a chat and wound up with pricing (it's as cheap as $10.35/month), a website (pcnow.com), and the aforementioned horrific scenario of connectivity. Oh, and they've got iPhone compatibility of a sort, just be aware of the limitations.
*In theory, Webex engineers say a 56k connection will allow connectivity. The specs also provide compatibility with Panther and Win98 on the low end. Note I said "low end" which means the performance won't be anything close to a high-speed connection and some more current OS'es.
Full video explanation after the jump.