call shell from VBA

Can a button be placed on an excel spreadsheet that when clicked runs a shell. I have Cygwin installed on a windows 7 machine with excel 2010 that I would like a user to press a button to run a shell script. Currently, I run it with

Please Login or Register  to view this content.

, but I am trying to avoid any scripting. Thank you .

Please Login or Register  to view this content.

File not found.

I used to run
VB

Please Login or Register  to view this content.

that seemed to work but now cygwin opens and then closes right away. Im not sure if there is a better way or what I am doing wrong? Thank you .