When loaded in VB, VB Watch allows to easily create a backup copy of your project or group of project.
Simply select the Backup plan from the combo box on the VB Watch toolbar and press the Start selected plan button. VB Watch then compress all your source files in a zip file.
You do not even need to save your project before doing the backup; VB Watch will backup the project currently in memory.
The zip file is created by default in the original project's directory but you may change the destination by altering the Backup plan from the VB Watch Control Center.