Open Documents from blob in pdf

Hi,I would like to ask, is it possible to open blob file in pdf (in blob i had stored .doc file)? I storet document in database with webutil client_to_db and i'm use db_to_client for opening documents. But my question is, can i directly open stored file in pdf with а form that I use for opening documents?

My procedure for opening documents is:

PROCEDURE Open_Doc

IS

  ------------------------------

  --  Open a stored document  --

  ------------------------------

  LC$Cmd      Varchar2(128) ;

  LC$Name      Varchar2(100) ;

  LC$Doc      Varchar2(128);

  LC$Path     Varchar2(128);

  LC$Sep      Varchar2(1) ;

  LN$But      Pls_Integer ;

  LB$Ok       Boolean ;