what is a big deal in this case is reliability: some of the sensors will be installed in locations where it would be an all-day trip to push the reset button, so it's important that there are no mystery gotchas in the drivers that cause the system to flake out once a week, or even once a quarter.
What about using watchdog timer?
Did u check here already?
Also check this.
I used some other example for rly easy page(plain text), but cant find it, but here is my pde
Basicly setuping up a page might not be so hard, all in all it depends what kind of page u want to have, if its just basic page, then there shouldnt be any problems.
As far goes for the price of ENC, u can get it rly cheap on ebay.