I want to be able to enter an integer into a cell and have it
automatically displayed and perceived by excel as a decimal less than
1.

In other words, if I enter "456" into the cell, I want it to display as
".456" all the time. I would further like this formatting to apply to
any number entered in that cell, regardless of how many sig figs there
are, AND I only want it to apply to one cell or a specific range, so
the Tools--Options--Edit--Fixed Decimal Places setting won't help
me.

If possible, I'd like to do this without a macro so it can be used with
Pocket Excel.

Thanks to all.