Timing: HD upgrade kit and comcast digital tuner card

[flyinglow]

I just got a new Tivo HD and I definitely want to pick up a HD upgrade kit but I'm thinking of waiting a month or two (due to finances). If I have comcast come and install the digital tuner cards now, will that be a problem for an upgrade at a later date? I assume not, but I just wanted to check. Is it "better" to do the HD upgrade first or does it just not matter at all?

Thanks.

[WK-Michael]

Frankly, it is better to do the upgrade first, so that there won't need to be any potential re-pairing of the CableCARDs with the new drive at the time of install. But it's not a very big issue, and it's not that hard to re-pair if you need to.

[flyinglow]

What does this "re-pair" involve? Is it just a call to comcast? Do they have to come back out to my place? Or is it something that I can do? And if it is, do I require a linux box to do it?

Thanks

[WK-Jeff]

You have to give the Cable Company the information from your TiVo/CableCARDs so they can authorize the cards. Sometimes, changing drives requires you to give the cable co any info that changes as a result of the new drive. It is pretty rare, though, for this to be required.