Chris - Moderator:Dell only offers external tuners.
Unfortunately, that is the only option. I would LOVE to get the internal tuners... I saw a thread somewhere here where the external DCT's were modified to fit into the case. Basically, the guy pulled the power from one of the internal floppy disk power connectors, then mounted the internal guts of the DCT inside his case. I guess anything can be done, but it would certainly be much nicer if Dell offered the internal option. That being said, I'm assuming that the DCT's produce some amount of heat, not to mention that if they were internal they would block some of the airflow inside the case.
The one advantage the external DCT's that I see is this... I will be using my XPS 420 as an HTPC, and it will be in my living room sitting in some custom built shelving. I can actually place the DCT's on the other side of the custom entertainment center (behind a door) and they will be out of the way, and this will mean that no extra heat from the DCT's is introduced into the XPS 420 system.
Okay, back to the topic at hand... Just checked again, still no change. The Dell website says the expected ship date for my DCT's is the 28th, yet it still says 6-day delay for new orders. That seems pretty messed up that they are still telling people it is just a 6-day delay.
-Scott