You say you need the SDK. It is on http://www.adobe.com/devnet/acrobat.html - be sure to download the correct version for your release of Acrobat.
Please do not expect to find examples of what you want to do, nor ask us for them. The SDK is a large amount of documentation, and developing with Acrobat requires that the developer read large amounts of documentation. Some examples will help illuminate the documentation, but I mention this as a note because people whose idea of programming is copying and pasting are frequently frustrated by this.