>Is there a way in Word to have a transparent image to be enabled? I have an image which is a circle. If I paste it in Word, I see the black background outside of the circle. I would like to avoid that. It's for a printout.

Try this.

Bring up your picture toolbar. ( View / Toolbar / Picture )
Select your image.
Click the 'Set Transparent Color' button on the picture toolbar.
Click on the black background of your image.

Anthony Letts