I have a TON of stuff on my computer and the Windoze Add/Remove sometimes takes forever to populate,
so I have an alternate uninstall program that I use usually. I have a "casino" directory that I usually install into (if they ask) and it goes in Program Files if they don't ask.
Two of the casinos weren't that much of a pain even though they didn't show up in my uninstall, the one casino in particular that prompted this post (Mandarin Palace) installed into my User\Local Settings\Application Data\something\something else\whatever the software is called\Mandarin palace etc... I had a hell of a time just FINDING it!
(lol - actually I wasted a bunch of time looking then I was like DUH and found the path from the casino icon.
But it seemed shady to me that they're hiding it like that...more like a virus than a reputable casino. Not that they ARE a reputable casino!
(edit) I don't know that they're not reputable either.