That's not a Windows 7 question, so strictly speaking you're on a wrong forum.
Anyway, http://googlephotos.blogspot.nl/?m=0 tells you what google advises.
Kees
Google has announced that it is no longer supporting Picasa. What does this mean to the thousands of people who use this facility? Will it become defunct and inoperable? What will happen to all my thousands of photos? How will I be able to edit, email etc, in future? Vidneg.

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