Bitdefender 2010 Troubleshooting / Bugs

Hi there. I am using Bitdefender Total Security 2010 on Windows 7 x86 Professional in my school network. I have got more than 10 PCs there with Bitdefender installed all on them. I cannot add more than 10 IPs network zones in adapter configuration in firewall network. I want to allow 28 PCs IPs in bitdefender firewall. But it only limited to 10 in one network adapter. How do I add more than 10 IPs in my one and only school network in one network adapter configuration?

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