Endpoint Protection

I have a Friday Scan group that I created a while ago - how do I go in and create a single Exe for my associates to run when they want to install SEP.  I can't use the migration and deployment wizard as it wants me to create a new group.

Log in to SEPM
Click on Admin
Install Packages
Select on Export packages
Now you will get an check box saying , from which group it should export polices from
in that select your new group
click export package
now package are created and policies are from your new group.
install it to machines it will report to your new group with same polices

About the Find Unmanaged Computers function in Symantec Endpoint Protection Manager

http://service1.symantec.com/support/ent-security.nsf/854fa02b4f5013678825731a007d06af/fed54d72d812322f8825736a004bc6d6?OpenDocument

How to install clients using the "Find unmanaged computers" in the Symantec Endpoint Protection Manager

http://service1.symantec.com/support/ent-security.nsf/854fa02b4f5013678825731a007d06af/300aefa98822767c882573b20068c884?OpenDocument

OR else you can also do it using Rafeeq's suggestion.

Rafeeq has it exactly right.  The only thing I would add is that once you have exported this new package, if you want to install it remotely you can then use the Migration and Deployment tool.  The wizard will give you the choice of creating a new package or using an existing one.  You can browse to the package you just exported and select it.  This will let you push the package out to client computers without having to create a new group or another package file. 

Good luck!