You most certainly can, and should hide all of the ms-access interface. The
options to complete hide and keep people out of the ms-access interface can
easily be done using the tools->start-up options. Using those options allows
you to complete hide the ms-access interface (tool bars, database window
etc). Also, using these options means you do not have to bother setting up
security.

Try downloading and running the 3rd example at my following web site that
shows a hidden ms-access interface, and NO CODE is required to do
this....but just some settings in the start-up.

Check out:

http://www.members.shaw.ca/AlbertKallal/msaccess/DownLoad.htm

After you try the application, you can exit, and then re-load the
application, but hold down the shift key to by-pass the start-up options. If
want, you can even disable the shift key by pass. I have a sample mdb file
that will let you "set" the shift key bypass on any application you want.
You can get this at:

http://www.members.shaw.ca/AlbertKallal/msaccess/msaccess.html

I don't have a sample for 2007 as of yet.....

For your second question, there are third-party form resizing
solutions available that might help:

A shareware version of a form rescaling module I wrote called
ShrinkerStretcher is available at this web site: http://www.peterssoftware.com/ss.htm

There's a form resizer at http://www.jamiessoftware.tk/resizeform/rf_jump.html
.

Another one: http://sourceforge.net/projects/modscaleform

The Access Developer's Handbook has form resizing code included:
http://www.amazon.com/exec/obidos/ISBN%3D0782119417/107-8064361-7403703

Hope this helps,

Peter De Baets
Peter's Software - Microsoft Access Tools for Developers
http://www.peterssoftware.com