This is not really a plugin, but a utility like Hotspot Magic.
using this one you can copy the project folder you want to back up with just a few clicks.
You can also use this for other folders, not only AM related ones.
Here you go: http://files.filefront.com/Backup+Projectexe/;13726768;/fileinfo.html
Known issues: Please don't try to select non-hard drive directories such as a diskette or a DVD/CD rom drive, because this will cause the program to crush. Besides you aren't going to have AM installed in a CD-ROM...