Should I get TiVo or different DVR?

I currently have had cable TV service with Charter Broadcasting Network for 10 years and have not and still do not have DVR service in my household. I wish to get a TiVo DVR premier system (a href="http://www.amazon.com/TiVo-TCD746320-Premiere-DVR-Black/dp/B0036OR910/ref=sr_du_1_map?s=electronics&ie=UTF8&qid=1296011811&sr=1-1)." rel="nofollow"http://www.amazon.com/TiVo-TCD746320-Pre…/a I also have a couple requirements that I do not know if TiVo meets. I want to be able to set my TiVo - or other DVR system that I end up buying - to record shows when I am not home, through my iPhone or through my laptop. I also want to be able to watch shows recorded by my DVR on my computer through my network connection. I do NOT, however, wish to subscribe to anything with TiVo. I only want to record and watch TV I have through Charter, not any movies from the internet that TiVo can offer me. I do NOT wish to switch to Dish Service (yet), so please dont recommended that I do. If anyone can refer me to a service that works with Charter that has all or some (in that case, which ones?) of the features I want to use my DVR for.