First of all I do not own a tivo but have plans to get a 40 hr. tivo soon. 1. After getting it set up and gettting familar with it the first thing I want to do is upgrade the hard drive. For someone new at this is it generally easier to get an additional hard drive or replace the existing drive? 2. Where is the absolute best step by step on upgrading the drive? 3. What are some of the other "hacks" that one can do with a tivo and maybe a good step by step to that as well. I don't necessarily need my hand held but as someone new to tivo there is a world of info on this site and I want to at least start off with a good guide. Thanks.