573304 MALWARE REMOVAL ASAP

We've been notified from Google that our site has been reported as having malware. In reviewing our sites, it looks as though .htm, .html, php, and .js files have been loaded to our sites. I need someone to review our websites and server, find the problem, fix it, and secure our vulnerabilty. HELP!!! 10 websites that we know of, have an issue. 2 of which are static html 8 are php Verified only, escrow only. See PMB for details... ASK QUESTIONS PLEASE... I am not familiar with what is necessary to complete this task. So please ask all questions.