software

I need to have values retained in cells and deactivate formula after use so
the subsequent formula can access same criteria cell for new information only
to be placed in new cells.

Steps:

Report downloaded each month onto Spreadsheet entitled 1.

Title page (Natl Rank) for report reads current Month.
=IF('Natl Rank!$C$1=quot;Month of March 06quot;,'1'!$C$26.quot;quot;)
Enters value in cell based on C1 text reading quot;Month of March 06quot;

Cells directly to theright of the March cells are April cells.
Following month same cell Natl Rank C1 text gets changed to read Month of
April
=IF('Natl Rank!$C$1=quot;Month of April 06quot;,'1'!$C$27.quot;quot;)

March column goes blank. April column fills in

I need the data collected for March to be retained somehow but the report
that this data is coming from is over written each month. New month's data
is to be placed in cells next to the preexisting March data. If I change the
text to read Month of April from March my cells for March go blank. When I
overwrite the existing report for the new months data, the data inside the
March cells change and shouldn't, --

Should I create a macro to copy the March data before the new download and
Paste Special the values? If I do that then I am wiping out my formulas I go
but get to retain the data.
Rebecca