My Graphics are Resizing Themselves

[Nancy Kaminski]

I am using PNG format screen captures in my FM 7.2 books, inserted by
reference. These graphics are resized to 150 dpi when inserted. I've
found that when I reopen the book, a number of the graphics (but not
all) have resized themselves to 96 dpi. Also, when I look at the object
properties dialog  box, the dpi setting control is disabled---the only
way I can resize the graphic is by changing the percent size. 
 
What's going on? How can I make my graphics behave? I've never had this
trouble before. I suspect one reason for the behavior is the use of PNG
instead of TIF---I changed over a couple of months ago and this started
happening.
 
Thanks for any help that can be offered!
 
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Nancy Kaminski | Technical Writer
Spanlink Communications
Minneapolis Minnesota USA
nancy.kaminski at spanlink.com
(763) 971-2311 phone * (763) 971-2300 fax
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