How to MIME outlook from web download using asp.net

[Roark]

In outlook, I've setup an advanced search (Ctrl-Shift-F) and saved the
search as msgsrch.oss. Next, I've uploaded this file to a field in my
web sql server. In my web app, when I click on an email address I'm 1)
loading the mshsrch.oss field into a variable, 2) replacing the email
address with the one that is clicked on, 3) pushing the file out so
that the search pops up un outlook.

This is really cool - if it worked. My problem is in step 3. I've got
this so far:

Response.Buffer = true
Response.Clear()
Response.AddHeader("content-disposition", "attachement;
filename=msgsrch.oss") 'have also tried inline instead of attachment
Response.ContentType = "application/vnd.ms-outlook"
Response.BinaryWrite( reader("msgsrch") )

This will give me the open/save dialog. Hitting open gives a beep and
nothing happens. Hitting Save allows me to save the file and pops up
another dialog offering to open it. If I open it, it works and the
outlook search dialog comes up.

I don't mind getting the open/save dialog but how can I hit open and
have the outlook search dialog come up?

Can I bypass the open/save dialog so that the outlook search dialog
comes up immeadiately?

I've got a GoDaddy hosted account so I can't read/write files. The
trust level is medium and set not to change. (I think.) I'm using IE7
and outlook 2003 on a XP SP2 machine. Also using asp.net 2.0.

Thanks in advance.