Request tp write a letter regarding change of PG-course from Project management to PG-course in Construction Management

Dear sir,
This is NABIL DALVI, i have recently taken admission in NICMAR (DISTANCE EDUCATION ) in POST GRADUATION PROGRAMME IN PROJECT MANAGEMENT BUT I WANT IT TO BE CHANGED TO CONSTRUCTION MANAGEMENT....The reason for the same is that while applying to the course i wasnt sure which to apply for...but i now im feeling the latter one intrest me the most.... i have taken admission on 6/11/09... i have recieved the note-books at the time of admission....
please help me draft a letter addressing THE DEAN of NICMAR( School of Distance Education)...
waiting for ur reply...