Firewall blocks itunes from recognizing iphone

Running Windows XP SP2.

Here’s what I know…

The firewall does not allow itunes from recognizing my iphone. However, my iphone does appear in Windows, but only as a scanner/camera device.

I have tried turning off the firewall, putting it into training mode, but still it does not allow iphone to appear in itunes.

When I uninstall Comodo and reboot …magic…Itunes instantly recognizes my iphone.

How do I solve this problem without having to uninstall Comodo each time I need to backup update my iphone?

Please have a look here, it’s a bit of a pain but seems to work;;msg607016#msg607016