Hi,
We do encourage people to use SEP Small Business Edition 12.1 instead of Small Business Edition 12.0
However if you are using 12.0 this article might help you.
Step by step guide :
1) Download Software from https://fileconnect.symantec.com.
2) Once the download finishes succeesfully, extract it to a location of your choice.
3) Navigate to the extracted files, then enter the SPC folder and click on setup.exe
Setup Initialization Process will start
Welcome Page
License Agreement page
Choose Destination Folder, Click “change“ to install on different folder
Ready to Install
Setup Progress
Setup Complete successfully. Ready for configuring the management server
Administrator Settings
Email server communication settings
Default port summary page
Management server configuration summary page
Database initilization process will start
Database Creation Summary Page
Symantec Antivirus Migration (Optional)
Symantec Endpoint Protection Completed Screen
SBE 12.0 login screen
SBE 12.0 Product life cycle details
More details about product life cycle are available here:
http://www.symantec.com/business/support/index?page=releasedetails&key=54619&searchid=1311515821687
Voted up Chetan......