I know there is a MAX function for getting the highest number within one field. What if I have a Report where 1 ROW has 5 COLUMNS/FIELDS of DATA and I want to have a 6th COLUMN/FIELD that displays the MAX VALUE from the 5 COLUMNS/FIELDS?

try the MAX funtion, a simplified example is below:
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DEFINE FILE x
COL6/P12.2 = MAX(COL1,COL2,COL3,COL4,COL5,.....);
END

TABLE FILE x
PRINT COL1
COL2
COL3
COL4
COL5
COL6 AS 'MAX VALUE FOR COLS 1-5'
BY SORT1
END

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Good luck,
Paul.

AWESOME, that works, thank you thank you!