I posted the question in this thread because it is exactly what I'm having a
problem with - performing calculations using merge fields.  I have become
accustomed to getting yelled at by moderators for starting another thread
with the same subject, so I opted to post under this.  Sorry if this too is
wrong.

As for the problem, I don't know how granular you want me to get, so I'll
start from the very beginning and apologize if it's long.  

The document I'm trying to build is an invoice that sales would be able to
generate invoices with from our sales system.  Searching the internet, I came
upon a template that seemed like what I was looking for.  One row across
citing Product Name, Product Unit Price and the last giving the Total Price
for the product.  A Grand Total column totals all the lines above it using
=SUM(TOTAL).  As our product is a software service sold on a yearly basis, it
would be ideal to have some way for the one template to accommodate every
multi-year scenario we have.  I used the ASK code to prompt the user to enter
in the number of years that the deal was for.  This value is stored in a
bookmark called YEARS, and this in turn is used in a field that calculates
the cost per year.  

So far as I can tell, I need the proper syntax to multiply a mergefield by a
bookmark and have it format as a dollar amount.  I need to multiply the
Product Unit Price mergefield by the value entered into the YEARS bookmark by
the user to get the Total Price for each product on each line of the invoice.
Adding a quantity field with a fixed number is not possible because of the
way finance set up the sales system.  I found a page in the Microsoft Help
and Support site titled "WD: Performing Calculations in a Mail Merge Field"
which had some examples of calculations, but every time I try entering the
formulas into the word document, it gives me the "!SyntaxError" message.

I hope this explains my problem better and thank you for any help you can
give me.