psd.tutsplus Just released Office Resources PSD for free. This PSD Resource pack includes all the objects you can see in the preview. They are fully layered, so you can customize them for your needs. They all have a high resolution. In terms of easier use, the download contains 1 PSD-File with the others embedded as Smart Objects.
Demo: http://psd.tutsplus.com/freebies/psd/office-resources-psd-freebie
