Objective C on Windows system

Can you tell me what software I must used to develop for iPhone on Wi开发者_JAVA技巧ndows Operating System?

You cannot develop for the iPhone on Windows. You need MacOS to run the SDK, and MacOS generally runs only on Apple computers - unless you want to run it inside VMWare or VirtualBox (hardware virtualization must be supported by your CPU). But you still need MacOS for this.

It's against Terms of Service to run OSX on a non Apple computer, but look up hackintosh in google for more information on it. As for someone else recommending a Mac Mini, I would personally save up and get an iMac or MacBook Pro over that, there's just so much more you get for not much more.