Home-Grown TiVo Stories?

PolyDwarf writes "I'm in the process of figuring out how I'm going to build a homegrown TiVo machine (i.e. a computer sitting next to or in my home electronics stack). My question for is "What's worked best for you?" Most solutions I've researched are great if you have regular cable. However, satellite systems and digital cable boxes seem to present a special challenge, in that the software on the PC needs to know about an IR connector that is then hooked up to the front of the digital cable/satellite box. Who has done a solution like what I'm researching? What cases/processors/memory/TV Card/IR transceiver/OS/software/etc worked out for you? Did the end result justify the pain and hassle?"