Excite@Home says they won't support OS 8.1, so I've got a high speed connection that can't be used on my 6400. Anyone know how to configure the OS 8.1 with this cable ISP? They say I have to upgrade to 8.6 at a minimum. If that's the case, what's involved in upgrading my OS, cost, etc? Any recommended upgrades I should get--8.6, 9.0, etc? I have the Performa 6400/200 with 132Mgs Ram, otherwise the remainder of the system is stock. Thanks for any help.