Windows will run soon on the iPhone using Citrix Receiver, a remote screen software that connects to a PC and gives you the illusion you are running Microsoft's operating systems, including copy and paste functionality.
Why is this useful? It will give you the ability to run full Windows apps in your iPhone over the network. According to Citrix, you will have full Windows capability, including cut and paste inside Windows. And while this is not the first remote screen application available for the iPhone, it is the first one which is actually supported by a big company, which will make corporations happy.