form resizer
Jamie Czernik developed a module that works pretty good. See below link (it is freeware):
http://www.jamiessoftware.tk/
http://www.dirfile.com/publisher/jamie-czernik.html
One suggestion is that it works best if you have a moderate screen resolution. If you are changing drastically, it itn't able to adjust everything correctly. I also increased the size of the borders around my text boxes and labels so my data is not cut off.
I also gave my users a button on a main form that lets them test it and if they like it, it will apply to all the forms when they are loaded. They can also click the button to return to the original size.
Good luck.
ADDED: There is also a class module available on the Access Developers Handbook CD:
http://www.developershandbook.com/
I am not sure which would work best for you but I thought I better mention both.