Can i scan in my letterhead to use as a template in Microsoft word?

sure you can use you letterhead as template.

Can i scan in my letterhead to use as a template in Microsoft word?microsoft office 2007

You sure can. You should just scan in the letterhead, then create a new template in Word.

Can i scan in my letterhead to use as a template in Microsoft word?windows media internet explorer

yes you can
Definitely. Just save it on your computer and insert it as a pic in the background or scan it directly to Word.
If you have a digital version of your logo you can cut and paste it into the header of an MS word doc.