While there are more easier and advanced methods (IIRC someone has created a macro,) I use a dumb one. I copy from Word to Notepad (TEXT editor), and then copy again from Notepad to AW. All formats will be lost, including font types, font sizes, italics and underlines, etc.
Just in case, if you have never used Notepad before... Notepad is accessable by clicking START > ALL PROGRAMS > ACCESSORIES > NOTEPAD. It's convenient to make a shortcut to your desktop by right-clicking the icon and select SEND TO > DESKTOP (create shortcut.)