I don't know how you would achieve that, but probably the best way to do it is to write code in VBA to do this, then once you have it working convert your code to ABL Com-Handle style to achieve it via ActiveX
A good reference to all the objects available to you in Word will be in the VBA help file, located somewhere like this: C:\Program Files\Microsoft Office\Office\VBAWRD8.HLP
Some more tips on ActiveX programming with Office:
http://www.oehive.org/node/555
Also, search the Progress knowledge base for for ActiveX.