If you want to be more organized and more productive at work, read Bit Literacy: Productivity in the Age of Information and E-Mail Overload by Mark Hurst. The book is much cheaper than a seminar on organizing your desk and computer files and probably a lot more informative.
I gleaned some great tips on accomplishing the following:
*Managing and organizing my e-mail inbox
*Labelling and identifying files, particularly work documents that I create, revise, distribute, and publish
*Storing work files
*Developing strategies for a "media diet" (controlling the amount of information I receive and read)