A: 
  1. Impossible; you can't modify the appearance of a plugin (e.g. Adobe Reader)
  2. Users can grab the path anyway and wget it, even if you could.
Delan Azabani
I think...i have to take some different route to take care of my data.Thanks for replay.
Nitz
+2  A: 

You could integrate the PDF in a visor, some like a Flash Player. For example, the one used in http://www.slideshare.net/ They embedded the presentations (PPT, ODF, PDF,...) with a Flash Player, so the visitor can't download the document.

amieiro
+1 This comes closest to what the OP wants.
Pekka
nice..will check it now..hope this goes well....Thanks 4 replay.
Nitz