I seem to be missing something when I load an instance of MS Excel. I'm using the process below in QTP

<font class="small">Code:</font><hr /><pre>
Dim xlApp
Dim xlBook
Dim xlSheet

Set xlApp = CreateObject("Excel.Application")
Set xlBook = xlApp.workbooks.add
Set xlSheet = xlBook.activesheet
xlSheet.application.visible = True
</pre><hr />

Which works fine, but the problem is, I have a custom Add In that's needed for the remainder of the program to work, but it's not loading. Is there a way I can start excel with the add in included (called "MyFormulas")?

Thanks for any help!