- Open Windows Explorer and navigate to the folder you wish to copy
- Right-click on the folder and select Copy
- Open the applicable Visual Studio 2010 solution
- Select the project you wish to copy the folder to
- Navigate to the proper location in the project and right-click on the parent location of the folder
- Select Paste
The folder and all of it's sub-folders and files will now be copied into the specified location. I know this seems like it would be obvious, but I seem to experience a moment of "how did I do that last time?" whenever it's been a while since I've created a solution that requires me to do this. Good stuff!