There hasn't been a lot of action on the i-openers, so understand why there wasn't a lot of replies....
From what I know and I sold my last i-opener years ago, my advice would be to get one of those $399 computer specials like at CircuitCity or BestBuy; with all honesty, there ust isn't a whole lot of life left in standard i-Opener.
BUT! it might be possible to do what you want...
Try this... http://web.archive.org/web/20010520163109/http://www.iopener.net/anyisp/info.htm
Email Badflash, Jack might be able to help....
http://www.badflash.com
http://www.linux-hacker.net/cgi-bin/UltraBoard/UltraBoard.pl?Action=ShowPost&Board=technical&Post=2690&Idle=0&Sort=0&Order=Descend&Page=0&Session=
Really though... One of the reasons why the i-Opener failed was becasue it couldn't run the majority of websites, no realplayer, no movie type content, the majority of webcontent wasn't supported then and I am sure not now. A standard PC Celeron based system even and old PII or PIII beats the crap out of of the i-opener!! Check around, you might be able to find a freeby Pentium system.... Even in a dumspter ??
Even the hackers aren't doing a whole lot with IO's any more.... Personally I thought the GCT's beat the crap out of the IO's.... they were made by the same group but never got distributed in the scale that the IO's did. They were twice as fast, had network built-in, removable compact flash to run off of.
If this doesn't work, I can't say what might; you might have to use Dolly and put the ANYISP image to the Sansdisk on the IO, which might be tough since I am not sure if you can find it since I couldn't...