Question : all of a sudden I get a "file not found" when I open a form

microsoft access 2007, I must have changed something, cause now every time I open a form I get "file not found".  I am able to click ok twice and then the form loads.   When I enter debug and try and add or delete any line within the module, I also get "file not found" and I can't change anything.

Answer : all of a sudden I get a "file not found" when I open a form

I would be extremely leery of any .dll you download from any source other than Microsoft in this regard. Also, as this something that must be in sync with all other parts of Access (and other parts of Office, for that matter), if you do believe that you have an issue with this you would be far better off re-installing or repairing your Office installation.