Sonic OS - help for a somewhat newbie: restrict access to server

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http://serverfault.com – my boss wont hire a network guy, so im trying my best to get this done and help out. i know my way around the sonicwall os well enough to get into trouble, but i am not an expert by any means. here is my problem: we have a simple network protected by a sonicwall nsa 240. it has been running great for a couple of years now. its a t1, and we have a single usable ip. recently, we needed to pass PCI compliance for our merchant account credit card system. everything passes except for 1 item... a video security system dvr that is accessible from the outside world through our ip on port 8080 (incomi (HowTos)