I am not that experienced with companies that does this. I prefer the companies who are "known" for this, price isn't too much of a factor. Who do you suggest? Have you had experience with them before?

Thanks :)

What language is your script written in?

It is mainly in PHP and MySQL. However there is bits and pieces of other languages such as Javascript, etc.

I would highly recommend http://brainbulb.com for such services.