DISPLAYING RECORD IN OTHER FORM IN CRYSTAL REPORTS

I am developing a library windows application project.
I need to create a book register report with language wise grouping and category wise.
My books table has a column named Language and catcode.
But the language column stores records in short.
Ie if language is "English" it is stored as "EN","H" for "HINDI" and so on.
Now i can select the field language in report but it will display only "EN" or "H" and so on.
How can i get it in full ie, if language is "EN" then i should get it dispalyed "ENGLISH" in my report and so for Hindi etc.etc.
What should i do for it and where should i write code for it.
Please help and thanks in advance