I'm developing a poker site to emulate www.pokerstars.com and www.paradisepoker.com. I've found a few companies that have software for this but I'm getting no response from any of them. I'm thinking about the possability that I might want to have an application built to my specs instead of an off-the-shelf script.

I need a setup that is scalable, secure and can automate some aspects of the site. I'm not sure, though, which language(s) would be best for such a script. I'm familiar with flash, php and javascript so I'm leaning towards what I know, but I'm open to any suggestions from the experts on this site.