If you HOST your database using FMP12, you can store the file reference to specific location
A CLIENT can see and do what you suggest.
FMP is not a "File" manipulator suchs as PDF. I can store and see it, but Adobe or Preview has be licenced to Manipulate a copy from your FMP data reference.
Filemaker itself does not easily manage files in the operating system.
Most people would move all files to be managed into a folder in the folder containing database (ease of path management)
There are plugins that give FMP the ability to manage files, most have a demo or trial available.
Super Container is most often mentioned http://www.360works.com/supercontainer/ $195.00: Workgroup license
They also have a multi purpose plugin for free http://www.360works.com/scriptmaster/
Thanks for the reply
If I choose to store the complete File Path of the file i.e. "O:\Produksjonsdata\Quantel\Testfile.xls" in a field ....
Can I make FM to execute this string as if I had entered it in the RUN window in windows ?
Thanks in advance
Try the script step 'Open URL' and specify that filepath.