This has been done!
' From Access 97 Developer's Handbook
' by Litwin, Getz, and Gilbert (Sybex)
' Copyright 1997. All rights reserved.
Check out this book, it comes with a CD containing a bunch of useful code, which I have found to work beautifully with Access 97 and 2000.
It checks the screen resolution and scales everything on the form. You put some code in the form's on_open event to call the code modules basFormGlobal and basFormScale.
The code is long and involved, obviously written by someone with a lot of talent and "a lot of time on their hands". It works and it's free. Be sure to include the credits (example above)