Windows Phone Phone Gap File Write
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I am new to Phone Gap and Windows Phone.I have used it on Android to create and write the values of a table onto a text file. In Android since there is an SD card i can see the created file on the Android emulator as well as a device by navigating to "/mnt/sdcard". I now want to do the same in Windows Phone but am unsure where the file is created , I checked the Phone Gap wiki it says file System write is supported on Windows Phone, if so where does the text file created get stored, as WP7 does not have a sdcard support?
How do i navigate to the file?

I also know that in C# we use Isolated Storage to read and write files as described in the link,

   http://msdn.microsoft.com/en-us/library/ff626519%28v=VS.92%29.aspx

but this is not the route that i want to go.I want to use Phonegap's File Write, can somebody please help me.