Win Explorer Preview pane - how to preview *.rpt (from Crystal Report)

Using Win 7 Enterprise and Crystal Report.
Crystal Reports are defined through an addon to MS Visual Studio
When generating a report it creates files with the extension .rpt
In File Explorer i can double click on it and MS Visual Studio kicks off an presents me the report.
So far so good, but
I would like to see a preview of the report in  the normal file explorer
What should the association in registry be ?? PerceivedType = ?
For a normal text file with just a funny extension it would say PerceivedType=text

Thanks for any suggestions
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Ido MilletProfessor of MIS at Penn State Erie and Owner, Millet SoftwareCommented:
The thumbnail image (of the report's 1st page)  is not available in File Explorer.  
It is available when browsing for a report inside Crystal, BOE, etc.
If you build your own report browser, you can use the DSOFile DLL to gain access to the thumbnail image.
nbtnt1Author Commented:
OK, thanks for sharing some light over the issue.
The thumbnail pic is often not sufficient. Do i understand you correctly in that this is basically not possible for Crystal reports ?
Are the previewers for text-files, pdf's, office documents (where you can see basically everything) beyond normal preview functionality ?
Ido MilletProfessor of MIS at Penn State Erie and Owner, Millet SoftwareCommented:
Yes, this is not possible with the normal File Explorer.

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nbtnt1Author Commented:
Thx !
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