How many machines do you want to protect (with AV + FW + HIPS)?
If you would like to protect 3 machines (am assuming you have 3 users in home office based on info provided below) you might want to install and configure Comodo Internet Security (CIS) on each of these to enable protection.
Download link:
http://www.comodo.com/home/internet-security/free-internet-security.phpESM is recommended for central management of endpoints for more than 10 -20 machines due to the setup / administration involved. For non-central management OR less no of endpoints CIS might be recommended.
Am not sure what exactly do you want to backup / need help with backup?
MS Windows Home Server provides a backup mechanism -
http://www.microsoft.com/windows/products/winfamily/windowshomeserver/protect.mspxIn addition Comodo provides the backup solution which might be downloaded from this link:
http://www.comodo.com/home/data-storage-encryption/comodo-backup.php