Setting The PCLinuxOS Resolution
Desktop Training - PCLinuxOS

To change the resolution on your PCLinuxOS desktop select System -- Appearance -- Resolution

find screen resolution in pclinuxos gnome 2.21.2 menu

After the Screen Resolution Preferences window comes up you can specify resolution, refresh rate, and rotation by clicking on the drop down boxes. After making changes select apply. 

screen resolution preferences

You will be shown a sample of the new resolution and asked if you would like to keep the resolution, select yes.