Microsoft Photo Gallery provides a very flexible import tool. For the easiest way to use this tool, first set up your computer to launch it when you connect your camera. Check this post for instructions on setting up your computer: How do I import photos from my camera to my Windows 7 computer?
To specify just the photos that you wish to import use the options in the import dialog. When the dialog opens the photos on your camera are shown in groups by the time/date the photos were taken. 
The groups that you have not yet imported are checked. Note the Select all option above the listings.
Click this several times to select all or to unselect all. You want them all unselected.
If you do not want the imported photos to be placed into multiple folders, adjust the Adjust groups slider all the way to the right. You will see the results in the main area.
Click the View all xx items link on the right of the listing to show thumbnails of all photos.
Now proceed through the thumbnails and select the photos you wish to import. Selecting works just as you expect. Click to select, click again to unselect.
Note that the number you have selected is shown. You may have to scroll down and up if there are a lot of photos on your camera.
When you have made your selections click Import to complete the task.
.:.
© 2012 Ludwig Keck
Ask Ludwig 
Does anyone know how to ” move” picture thumbnails using windows photo gallery ?
Every time I “click” on a thumbnail and try to move it to another position it just keeps going back to where it was.
Any help in this matter would be helpful.
Ray
Photo Gallery shows the photos located in folders on your computer, it functions somewhat like Windows Explorer. The thumbnails can be grouped and sorted in various ways, but not re-arranged at will. If you want to order your photos in a specific way, you can do that in SkyDrive.