No, if you are using the iPhone SDK from Apple. It requires a Macintosh PC that has an Intel processor and version 10.5 (Leopard) of the operating system or higher.
Yes, if you are using the Packager for iPhone feature of Adobe Flash® Professional CS5 software and the Adobe AIR® SDK 2.0.1, that prepares ActionScript 3 projects for the iPhone.
The iPhone SDK has access to all internal features of the iPhone like the GPS locator and accelerometer and the capability to send email. The Adobe SDK was initially banned by Apple and may have limited access to iPhone internal features.
No it is not possible to develop iPhone applications on anything other than an Intel based Mac as the development tools are only available for Mac OS X.
The iPhone software development kit (SDK) only runs on recent versions of Mac OS X. The cheapest solution (short of trying to hack OS X to run on your PC) is to by a Mac Mini.
In the app store. You can get into app store by plugging your iPhone into your PC and open itunes or just tap on the app store icon in your iPhone, but you have to have wifi to buy apps wirelessly.
Yes, you can use the iPhone PC cable to copy music from your iPhone to PC.
There are 15,000 Applications!
Yes, you can see your Facebook conversation from both Iphone and PC.
Almost all of the applications on the iTunes store is compatible with the iPhone 4. Exceptions are applications which are for the iPad.
Yes.
Yes, the iPhone come with a USB cable, the same is used to charge the battery and to connect to a PC or Mac.
no
Through iTunes on your PC or Mac. In there you sync it, with your iPhone.
Steve Jobs