You can set up mail protection if you want, manually. In the next release Shareaza -
www.shareaza.com and a few other problems will be added. I am not sure, but I'm thinking that Areslite will not be one of them.
The reason a user can't add their own P2P program is because each protection service is designed specifically for that program. More programs will be added in the future, but for now Standard shield should protect you adequately.
Hope this helps,
-staind