Using VirtuaWinPortable -- but, want to keep multiple .cfg files for different purposes. These scripts help:
Copy_to_Cfg.vbs ~ http://www.box.com/s/65cf64a8877b6fd24873
Cfg_to_Copy.vbs ~ http://www.box.com/s/4719ecb4102f48a78c65
Sample use ~ http://www.box.com/s/6bae0d77b2c4f77aca5b