dear imran ,, I hav'nt in soft copy yar,, just directly go to competent authority of your uni and discuss this issue..
first u meet the clerk staff whose responsibility is writing/drafting a letter. You guide him in such way that ,,

Ref.../../...
TO WHOM IT MAY CONCERN
This is certify that Mr.... is ex student of BBA , roll n.. registration no ... session ... has passed his course with ..CGPA with the specialization in Finance.



Sign of Competent Authority and as well stamp of branch whose issuing this letter