ocx is an activex control.

depending on what platform, you need to create a separate standalone application which pulls data out from OCX into some format such as xml or just raw data in table row column..

and use excel to read the data as datasource.

you can even write that application so that it output to excel file / csv ..

something for you to start
http://stackoverflow.com/questions/2881103...ows-application

you need an actual documentation of the OCX file and how to OCX file works.

depending on which language you are using, and hopefully you are using something like .net, try adding the OCX as reference.. if there's an error, try registering the OCX file via the link i gave it to you.