One option you have is to edit your template, i.e. Invoice (Product) template, and use a script to display the characters in uppercase. This will only help when printing or emailing invoices; so when viewing the data in Method you will still see it as it is received from QuickBooks. In order to edit any templates you would first need to download and install the Method Report Designer.
Helpful tip - When editing a template always remember to save it as a different name so that if you make a mistake you can always go back and open the original template again. If you don't do this and make a mistake on one of your stock templates, it will be a tedious process to restore the original and will actually be considered a chargeable Consulting session.
- Ashur