converting Month to French

I have a report currently with a English Letter and a french letter. On the French letter i need the Date to come out in French. On the English Letter i am using the Print Date Special Field right now. I am not sure how i can code the in below into the report.

can i please get some help

French date format: le dd month, yyyy Example: le 25 décembre, 2009

English to french conversion;

January janvier

February février

March mars

April avril

May mai

June juin

July juillet

August août

September septembre

October octobre

November novembre

December décembre