ViewSonic: Now, based on what you told me I understand that:
There is an issue with the installation.
You want to change the display settings.
There is an "OSD locked" message so you cannot change settings.
ViewSonic: On some display devices, there is an OSD Lock that locks all current control settings and prevents access to the control menus until this mode is unlocked. To unlock the OSD menus, press and hold both the  button on the front of the monitor and the down arrow button for 10 seconds.
Note: These same buttons, when pressed for another 10 seconds, will lock the OSD
I have to agree with Lenjack on this... this wasnt hard http://www.viewsonic.com/support/index.htm,
select Monitors, put in model, and question