I wanted to put IE 9 64 bit as my default browser in Sandboxie (free).

After some posts at the Sandboxie forum I found out:

1) Sandboxie only allows the default browser in the box.
2) IE 9 64 bit version cannot be the default even in w7 64 bit computer
3) Using the post from the expert and the procedure I have a desktop shortcut for IE 9 64 bit that runs it under sandboxie control.

This can work for any program.