Thank you every one who responded me personally. I solved the problem and 
now i have got the open/Save it box.

SN

>From: Gregory_Griffiths@c...
>Reply-To: "HTML Code Clinic" <html_code_clinic@p...>
>To: "HTML Code Clinic" <html_code_clinic@p...>
>Subject: [html_code_clinic] RE: Download file through a link
>Date: Fri, 23 Mar 2001 17:02:38 +0000
>
>What the users system does with any link is determined by their MIME
>type configuration on the local machine. ASP is generally executed on
>the server and so are VERY unlikely to have the user prompted for a
>save/open as the webserver will directly process this request.
>Within ASP (written in VBScript) you have the response.write and
>content-type options to return whatever you want, so you could have it
>return a CSV file or any other file type as long as you got it correct.
>
> > -----Original Message-----
> > From: sh_naeem@h... [mailto:sh_naeem@h...]
> > Sent: 24 March 2001 00:01
> > To: sh_naeem@h...; html_code_clinic@p...
> > Subject: [html_code_clinic] Download file through a link
> >
> >
> > Hello guys and girls,
> >
> >
> > I have a question. On my web page i am using a link which is like
> >
> > Click <a href="Filename.asp?Mailbox=1234" >here</a>
> >
> > Now what i want is when user click on it, he should get a box
> > asking if he
> > wants to save it or open it. When user click on open it, the
> > file executes
> > opens the resulting page in the browser (It is an asp file,
> > so the thing
> > needed by client is the result not code of asp) but when it
> > click on save
> > it. ASP File is saved on the hard disk.
> >
> > I want it to save the result not the code. How could i do that
> >
> >
> > Thanks in advance. Please help
> > Shumaila
>
>