Default Program For tif Files

I have Windows XP with Dopus 10.5.4.0.

I go into file types thru a lister and select a file and "Open With" and select program. I choose "Microsoft Office Document Imaging" and click the box to open with this program every time. It then opens with this program when I right click on a file from the lister and click "open".

However when I left double click it goes into the Opus image browser I think. Can left double click be changed to go into Microsoft Office Document Imaging?

Thanks!

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