I have a large sheet of about 12,000 rows that I need to reformat to
add to an Access Data table. My Excel sheet has sales volume by
month
(for multiple IDs and customers) vertically. I would like to take
this
data and make the months columns so that my rows are only about 400
instead of 12,000. I can create a pivot table, but it groups the
items where there are multiple products or IDs for one customer and
therefore it doesn't work for my Access table. Is there a way to
create a pivot table to re-sort my data in this way without making
goupings?

So instead of something like this:
Customer_Name Customer_ID Product Jan_06 Feb_06
Customer 4 33335 Product 1 92 85
Product 2
55555 Product 1
0 143
54446 Product 1
66443 Product 1
0 0
557989 Product 1

It would look more like this:
Customer_Name Customer_ID Product Jan_06 Feb_06
Customer 4 33335 Product 1 92 85
Customer 4 33335 Product 2
Customer 4 55555 Product 1 0 143
Customer 4 54446 Product 1
Customer 4 66443 Product 1 0 0
Customer 4 557989 Product 1