Re: Help w/ Mythbuntu and Comcast Digital cable
You can connect your cable box to PVR150 via S-video and RCA for sound. You will not be able to capture HD resolutions but you should be able to get any channel you subscribe to.
You will need to set up ir blaster for channel changing.
I assume you pc does not have firewire port. Firewire can be used for capturing HD content, and for channel changing. I don't think your specs are up to the task for playback.
Nothing is ever easy, but if it is difficult you must be doing it wrong.