Aloha to all the CAD junkies                       I need help with a problem i'm having on CAD.HOW DO U CHANGE THE VPORT  VIEW TO HORIZONTAL WHEN THE MODEL VIEW IS ON A 45 DEG ANGLE WITHOUT CHANGING THE ORIGINAL MODEL ORIENTATION.THANK YOU GUYS IN ADVANCE.CHEERS. 

MVSETUP command"angle" option"rotate" sub-option allows you to enter angle of rotationAnother way would be to set a UCS of desired orientation/rotation in MS, then in the viewport use UCS>>Restore (may also need the PLAN command to align view with UCS)

Thanks a bunch CarlB.Cheers.