In the Word 2007 Options (Alt, T, O, A)
[or Office Button=>Word Options=>Advanced
scroll down in the advanced section to the 'Display' category to choose the measurement units you wish to use.
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in word 2003 it was possible to change metric sizes to imperial, but cannot
do it in 2007>>
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Bob Buckland ?
MS Office System Products MVP
*Courtesy is not expensive and can pay big dividends*