We can help

Basically it looks like this application is saying it is adding some port exceptions to the Windows XP firewall.

Take a look here
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\GloballyOpenPorts\List

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\GloballyOpenPorts\List

Using RegShot on a system that HAS NOT been updated take the first snapshot. Then with RegShot still open, update one of the systems. Then take the 2nd snapshot, then review the differences.

Then with your script you read the registry and look for the change if it's there or not.