How do i dynamically populate a table with an excel file?

I need to move a doc from a Word file to some kind of help file (chm, webhelp, whatever). The Word doc has a bunch of tables where most of the data is the same for each customer. Unfortunately, the software has been updated in such a way as to make two of the columns customer specific.

The customer specific data will be stored in an Excel worksheet on the customer's server.

Thanks!