restoring iphone 3G firmware-what will will NOT be backed up?

[MacIIe]

Hello,

I want to do a restore on my iphone 3G, via iTunes, but i am concerned about the restore function and its impact. As I stated, it's an iPhone 3G and iTunes is running on Windows 7. I realize iTunes does a backup of the IPhone. But my question is what does the backup NOT save? I have contacts, saved text messages, apps from the app store, notes, wireless networks (their passcodes), and the like. After I restore my iPhone and return the data that was backed up, will my iPhone look exactly the same? And if not, what will be deleted?

Thank you.

 

[draz]

Basically no Music, Videos are backed up.

However there is a nice long list located here: http://support.apple.com/kb/HT1766
Click on "About Syncing and Backups", then on "iTunes will back up the following information" to see the full list of what it WILL backup.