Need to remove the maleware and restore the site

I need someone to remove maleware from a website and restore it to its original condition. Unfortunately, I am not sure exactly what type of maleware is causing the problem, though I assume it is either a virus, spyware, or adware. Furthermore, I do not know the source of the maleware, and it appears to have affected the entire website. I need someone with the technical know-how to thoroughly analyze the situation, identify the suspected maleware, and effectively remove it in order to have my website restored.