Ok, so a few weeks back i mentioned that i was developing an app that needs to be opened via a link on a webpage. I just set the content-type of the page to application/x-hst and put the correponding registry values in for that type: [HKEY_CLASSES_ROOT\.hst] @="hst_file" [HKEY_CLASSES_ROOT\hst_file] @="My Program" [HKEY_CLASSES_ROOT\hst_file\shell] [HKEY_CLASSES_ROOT\hst_file\shell\open] [HKEY_CLASSES_ROOT\hst_file\shell\open\command] @="C:\Path\to\Program.exe\" "%1" This works GREAT in windows 2k. Program opens up as expected, and life is good. However, on my XP machines, it seems that IE (and only IE) ALWAYS asks me for an "Open/Save As" confirmation, and the checkbox "Always ask before opening this type of file" is disabled which tells me that a security setting somewhere is prohibiting me to just tell the browser to Open the file. And it's only IE!! MyIE2 is fine, Netscape is fine, and all others seem cool. Anybody know anything about this? It's getting pretty frustrating because I really don't want to have my users choose "Open" every single time. help?