Forms don't actually clear all their fields when you add a new record,
unless you specify that you want them to. I think you may be talking about
a 'Single' or Columnar form where you see blank fields when you 'turn to a
new page'.
It sounds as if you are a newby to databases and haven't understood yet what
benefits they can bring.
As an example, with the scenario you present below, you would have 2 tables.
One containing each customer, just once.
The other table would have (apart from its own Primary Key) a number field
which would match the Primary Key field of the customer table.
In Access, if you need to type the same thing in several different records,
this is often an indication that you need another table.
To enter your data, you would create a main form based on your customer
table with a subform based on the linked table that contains the Totals
field where each customer could have several records attached to him.
Because the subform and mainform are linked, when you are on a customer's
record, any records which you enter into the subform will be linked to him.
There are some good tutorials below which will get you started - some
include a section on creating subforms but unless you have designed your
database correctly it will be a waste of time creating any forms so it might
be an idea to write to the group with your design and what you hope to do
with it, before you dive into forms.
http://www.teacherclick.com/access2003/index.htm (possibly the better of the
two
http://www.fgcu.edu/support/office2000/access/
You will probably have some templates with your copy of Access which contain
forms with subforms (depends on which version of Acc you are using) so do
have a look at how these are designed.
Evi