Simple web shell app?

Hi,

I'm new to iPhone apps but wanted to create one of those very simple web-shell-like apps, like the Bank of America one that only loads a website (possibly hosts some images, but not necessarily) inside of it and restricts the user to that site without any navigation items, etc. (not another safari...)

There must be a really easy way to do this. Can someone please point me in the right direction for a tutorial and instruction for this?

Thank you!

Paul