Sparkleads?

Hey all. I just signed up for Sparkleads and got approved today. I heard they're great for GPT/Reward websites. I want to transfer from CPA lead to Sparkleads but my I don't know how. This is the kinda of site I'm using: myvouchergreek DOT com (Heavily modified, though. Don't mean to break the rules, just want to show an example). I don't know how they do their post backs and everything. Thanks!