Hello B,
You could export the customer name and the address details from CRM into an excel worksheet, add the list of customer names onto another worksheet. There is a function in excel called vLookup using which you can join your excel data worksheet and CRM
data worksheet(copied into the excel).
Please see the details of the function below.
http://office.microsoft.com/en-au/excel-help/vlookup-HP005209335.aspx
Regards,
Jithesh