they're not in iphone size/format either...
thanks though
Anyway, download the application you want the icon for, find the *.ipa file for it, copy it to the Desktop and rename it to *.zip, extract it. Find the application that you extracted, it will probably be in a folder there. Right click on it and hit "Show package contents" ... then find the icon.png.
Now you'll need to use a tool like this iPhone png fixer to fix it and make it a useable PNG:
http://www.cyberhq.nl/2007/07/05/iphone-png-fixer-upper.html
Once you do that, you can edit them in Photoshop or do whatever. You won't be able to change the icon of the application on your phone, but you will have the icons like you requested.
EDIT: You're going to hate life. I just realized that the apps have square icons and the iPhone must round the corners for automatically. I did what I said for the Twinkle icon and this is what I get:
You'll need to fixpng and flipchannels them. Lemme check something, Super Monkey Ball has a funky icon, I wanna see what's up with that. Hmm...
Checking AIM...
Okay they apparently don't all do the same thing Twinkle does. That's very weird. Anyway, if you just post a list of the icons you want I'll just PM you a zip file if I have all the programs and if you can't figure this out on your own.