I have changed my screen resolution to 1024x768, but the resolution is not saved. Is there anything I can do?

Do this:

  /opt/SUNWut/bin/utxconfig -as off
  /opt/SUNWut/bin/utxconfig -ar 1280x1024
  logout
  login 

The first command turns off autosizing.
The second command sets the resolution.

You can verify the resolution by typing: 
   /usr/openwin/bin/xdpyinfo | grep dimensions

Additional information for multihead configurations:

If you set auto sizing off (no) in a multihead configuration, you also 
have to set the screen geometry with -R and resolution with -r. 
The screen geometry's default is 1x1 for a token. If you have 2 monitors 
in one row, the screen geometry must be 2x1. 

# /opt/SUNWut/bin/utxconfig -t <token> -m on -s <flag> -r <resolution> -R <geometry> 

Example: 
# /opt/SUNWut/bin/utxconfig -t MicroPayflex.5000f8b000130100 -m on -s off -r 800x600 -x off -R 2x1                               

This document is owned by the CTE-PCi group

Multihead info submitted by Thomas Dehn