Newbie Printing 6x4 photos Problem

I have P.S. 7 and am attempting to produce 6 in X 4 in prints from my
digital files using P.S. 7

I perform the following actions in P.S.:-

1. Rotate image as required
2.Change Image Size : Constrain Proportions is ticked but "greyed"
Resample Image is unticked
Resolution changed from 72 pixels/inch to
300 pixels /inch
3. Picture is now reduced to 5.12inches wide and 6.827 inches deep
4. Select crop tool - this is preset to 4in Wide and 6 in Depth
5 Left click and arrange cropped area as required.
6. Select "CROP"
7 Area produced is 4 inches wide (O.K.!) but is less than 6 ins Deep !
- WHY /

N.B. Area shown is 6 inched deep but the photo details stop just above
5 ins deep and the remainder is blank white .

B.N..





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