Need some info regarding Firewall Analyzer

Hi,
I am looking at using your Firewall Analyzer product. I will explain my situation can can you please let me know if this is possible with your product.
We are a small IT company that manage firewalls remotely for different customers. I would like to use your product to generate reports for our customers. Here is my question:
If i have different clients with overlapping IP addresses can i still use your product.?
Is it possible virtualise your product t cope with overlapping IP addresses....Is it possible differentiate different customers with maybe same IP addresses...Please note i am taking about IP addresses from RFC1918 range here.

Please note we manage their firewalls across internet using IPSEC VPN.

Hope this is makes sense....

Thanks
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