So I bought a TIVO not realising I needed an internet connection to get channel data.

Bugger.

Luckily for my iphone4, I was able to tether to my laptop, turn my laptop into a wireless hotspot in windows 7 and update it that way.  Sometimes.

Then iphone 4 update came out for hotspot.  That works too.  Sometimes.

Every 10 days or so I tru to update my Tivo, and sofar it has worked eventually, but it takes about an hour of fiddling each time, for it to say either 'no network adaptor' 'failed while negotiating' etc.

Can anyone tell me a reliable way to set up a Tivo once a week to get new channel updates from my iphone 4 hotspot (vodafone)?

I have managed to get it to work on about 6 different occasions so far, using both my computer as hotspot and iphone as hotspot.  No internet at home, so thats not an option.

Cheers in advance for th help.