Thank you Paul,
Method 2 is the best for me.

>Here are 3 methods to do it:
>
>1. Open the form and click on your ActiveX object. Look in the Properties window at the OleClass property. This is
>the ProgID of the control. Open the RegEdit program and do a search on that ProgID in the HKEY_CLASSES_ROOT
>hive. You will find a GUID entry that has that ProgID. Look at the value of the InprocServer32 key under the same GUID.
>This is the file that implements your control.
>
>2. By opening the scx file as a table (using USE).
>
>USE MyForm.scx
>BROWSE FOR "MyObjectName" $ ObjName && Case sensitive
>
>Open the Ole2 field. It contains the name of the file.
>
>3. Open the OleView program. In the left tree view window, go to Object Classes/All objects. Scroll to the control you're
>looking for. Click on it. In the right window, under InprocServer32, is the name of the file.
>
>In particular, the MS Progressbar may be in the COMCTL32.ocx or MSCOMCTL.ocx, depending on the version you're
>using.
>
>Vlad
>
>
>>I am using the MS ProgressBar, v 5.0 (SP2) ActiveX in my code but I cannot find the name of the .OCX file. How can I find out what is the name of the file?