You should be able to use workflows and field updates to change the case to UPPER Workflow -> field update -> select obj, thien field. Choose formula and your formula = UPPER () then activate it.
Full Answer
CONTAINS usage
1. Search for text. 2. Check if an unknown string or character matches a defined set of strings or characters.
CONTAINS examples
CONTAINS ("0123456789", LEFT (TextField__c,1)) To only match numbers 0-9, the compare_text length must equal 1. In this case, the formula is checking to see if the first character of TextField__c is a number between 0-9.
