I was able to acheive similar results, although with somewhat different settings.
The only annoying thing is, when windows starts, the screen is all messed up before powerstrip loads. I think the resolution defaults to 800x600 before powerstrip modifies it.
Does anybody know if this can be fixed? If not, its not a big deal.
See attached image for settings.
I sent a message to Xenarc asking about how to expand the resolution. They said that I should buy a video card that supports 800x480 natively. I asked for a suggestion. I will post when I hear back.