If you have set a reference to Word 97 in your application the package and deployment wizard will include the necessary libraries to run your code. You will only run into problems when the library on the users machine is a later version than you have on your setup, then you have to hope that good old Microsoft built some backwards compatibility into the newer version of the library. In most cases, it will be the case that htings will work out, but that is what testing is for!!!!!
Simon