I know it's an old out of date iPhone (2g) but I have been busy jailbreaking it and seeing what it CAN do rather than what apple thinks it can do
Apple say you can't run multitasking / wallpapers / folders on the original iPhone.
Some techy people have got together and released a modified 3.1.3 firmware which can do just that (as well as a few other tweaks).
I have attached a couple of piccys to show what I mean.
If you have an old iPhone 2g knocking around you should give it a go
If you DO want the deteails of the site you'd better PM and ask as I'm not %100 sure of it's legality.