Installing the Windows Automated Installation Kit (AIK) (Windows 7)
Download the WAIK RTM client (KB3AIK_EN.iso) for Windows 7.
Browse to your mounted/extracted folder. For Windows 7 64bit, run the wAIKAMD64.msi. For Windows 7 32bit, run the wAIKX86.msi.
Select “I Agree” and click Next.
Leave the default folder install location, make sure “Everyone” is selected, and click Next, and Next again on the next window.
Now you should read my tutorial on installing the WAIK Supplement for SP1.