CDE loging window resize?

I was asked to display a banner on the CDE login window and I have successfully accomplished that task. This is what I did:

1) made the directory /etc/dt/config/C
2) cp /usr/dt/config/C/Xresources /etc/dt/config/C
3) I edited /etc/dt/config/C/Xresources and ensured the following lines were present in MISC block of the file:

Dtlogin*logobitmapFile: /usr/snadm/etc/admintool.xpm
Dtlogin
greeting.labelString: Access and use of this machine \nis
restricted to authorized users

4) saved the file and quit

However, the xpm file that is using is warning text and it is to large to display under the normal viewing of, I believe is, 237 by 237 pixels. Is there a way to resize the CDE login screen to accommodate the xpm file? I believe there should be a way because when I enter my user name and then when it asked me to enter my password, and I enter the wrong password and after I click �ok� to the error message then the CDE login window resizes perfectly and the xpm file is seeing in its entirety.

Any suggestions would be greatly appreciated...