When installilng a software ,sometimes i have seen advertising even inside the installer. Either pay-per-click banners or offers to install another software in bundle (the latter being way more common). For example when installing Java, you see this "offer": I think that Ask Toolbar option is some kind of Pay-Pér-Install advertising, right? I want to know how can i do the same with my installer, which ad networks do support that specific format?
I think contact your software developer and ask him to add that kind of or your own tool bar in to it.