Extract this zip file on your BES server into a directory called msf_131 Within here you will find an ALX file (XML telling BES which directory to look at for which BlackBerry version), and 2 directories (1 for each software version).
Navigate to "C:\Program Files\Common Files\Research In Motion" and create a directory called Shared. Within this directory, create another one called Applications. Finally within here, create another directory called Market Simplified.
Copy the contents of msf_131 into your new Market Simplified directory.
Now you need to force the server to re-index its application list. Open a command prompt and run "cd \Program Files\Common Files\Research In Motion\AppLoader" and then run the command "loader.exe /index"
You now need to create a new share on your server in the directory C:\Program Files\Common Files\Research In Motion with Read & Execute permissions for everyone. BES cannot read applications from the local disk, only a UNC path.(If not already present.. considers a clean install)
Open BlackBerry Manager, and then in the Explorer View on the left (you may have to enable the view by clicking the Explorer View button on the bar above) click BlackBerry Domain, and then click the Software Configurations tab in the view on the right. Alternatively, you might probably have to open the Blackberry Handheld Configuration Tool and then select Handheld Management -> Software Configurations
Right click the blank space and Add New Configuration.
Click the change button and enter the UNC path to your new share (eg \\BES1\Research In Motion).
You should now see Application Software with a + to expand it. Expand it, and you should see Market Simplified. Nearly there now!
Click the policies button, and create a new policy called Market Simplified. Within this change the External network Connections permissions to Allowed. This stops the user from having to set this manually and possibly messing things up.
Click OK twice to get back to your Software Configuration, and then click the drop downs next to Market Simplified to change the delivery method to Wireless and the software profile to Market Simplified.
Click OK and go to your All Users tab to choose the users you want to deploy to (if you want all, just press ctrl+a to select all).
Right click your users, choose assign software configuration, choose your new configuration, and you're done!
If you want to force a quick deployment, and don't have to many users, you can also right click and choose Deploy Applications