Hi Jon,
Glad that you're up and running. When you said previously "takes more training than Zonealarm", I thought that you had opted for KIS.
I must admit that I don't recall having to add Firefox as a trusted application, but a quick look at this thread on the Kaspersky forum appears to confirm that it is necessary, particularly with KIS:
http://forum.kaspersky.com/index.php...opic=26927&hl=