I came across this pretty nice way to extract images from Office documents. Here are the steps to take:
Step 1: Download and extract Office Image Extraction Wizard Portable.
Step 2: Open the directory the program was extracted to and run Office Image Extraction Wizard.
Step 3: Click the folder icon next to the text box labeled Document. In the window that opens, navigate to and select the file(s) you want to extract images from.
Step 4: Designate a destination for the images by clicking on the folder icon next to the text box labeled Output folder. Hit the Next button to go to the last page.
(http://asset3.cbsistatic.com/cnwk.1d/i/tim/2012/07/26/imageextraction4.png)
Credit:Nicole Cozma/CNET
Step 5: Step 5: Click the Start button to begin extracting the images from your file(s). If you plan on using this program frequently, checking the box labeled Skip this page in the future will eliminate this page and make the process a few milliseconds faster.
(http://asset0.cbsistatic.com/cnwk.1d/i/tim/2012/07/26/imageextraction5.png)
Credit:Nicole Cozma/CNET
Try it.
source: cnet