Bernie,
The only way I know of is to open the PDF scan in one of the photo programs, then resave it as a .jpg file. The file can then be opened in MS Word as a graphic and enlarged to any size you wish by dragging the corners of the image.
Good Luck,
Gary
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Travlin' Easy
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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!
K+E=W (Knowledge Plus Experience = Wisdom.)