Hi, I just have the project that open PDF file in adobe acrobat reader from our application vb6. It might not answer your question but just give you an idea. 1. In VB6, create a form with one button name Command1. 2. Put the following code on the general declaration section. (It call to the windows API) Private Declare Function ShellExecuteA Lib "shell32" (ByVal hWnd As Long, _ ByVal Op As String, ByVal file As String, ByVal params As String, _ ByVal directory As String, ByVal ShowCmd As Long) As Long 3. Double click Button1 and write the following code. Call ShellExecuteA(0, vbNullString, "C:\PDF_File.pdf", vbNullString, _ vbNullString, vbShowNormal) Note: * There is no component or reference were added to this project. * I got an idea from expert-exchange website. But I have changed some option in the code to match my file path. Roath Kanel APO-CEDC Save Children Norway-Cambodia Office