Thanks.

I have another question.
This file is stored in the database, and I load the file and save it to the
local file system then use the Process.Start() method to launch word (in
this example) by passing it the .doc file.
Once the user exits the application launched, I would like to see if the
file has changed and if so, prompt the user and ask if they want to save it
back into the database.

Question:
How do I know when they are finished with the file and that I should be able
to ask if they wanted saved back to the database. I don't want to prompt
them every time they save changes (intermediate saves), I only want to
prompt them when they are done (application closes).

How would I know when the app closes (since I don't know which app even
loaded or which instance they may be using for this purpose)?

Tony