571621 remove Reported Attack Page and clean server from Malware

hi , we have a problem in our site [login to view URL] when the visitors open the website this massage come up ======================= Reported Attack Page! This web page at [login to view URL] has been reported as an attack page and has been blocked based on your security preferences. Attack pages try to install programs that steal private information, use your computer to attack others, or damage your [login to view URL] attack pages intentionally distribute harmful software, but many are compromised without the knowledge or permission of their owners. ================================= and i got an Email form google : ===================================================== Dear site owner or webmaster of [login to view URL], We recently discovered that some of your pages can cause users to be infected with malicious software. We have begun showing a warning page to users who visit these pages by clicking a search result on Google.com. Below are some example URLs on your site which can cause users to be infected (space inserted to prevent accidental clicking in case your mail client auto-links URLs): http://an-island .com/ http://an-island .com/vb/ http://www.an-island .com/ Here is a link to a sample warning page: [login to view URL] We strongly encourage you to investigate this immediately to protect your visitors. Although some sites intentionally distribute malicious software, in many cases the webmaster is unaware because: 1) the site was compromised 2) the site doesn't monitor for malicious user-contributed content 3) the site displays content from an ad network that has a malicious advertiser If your site was compromised, it's important to not only remove the malicious (and usually hidden) content from your pages, but to also identify and fix the vulnerability. We suggest contacting your hosting provider if you are unsure of how to proceed. StopBadware also has a resource page for securing compromised sites [login to view URL] Once you've secured your site, you can request that the warning be removed by visiting [login to view URL] and requesting a review. If your site is no longer harmful to users, we will remove the warning. Sincerely, Google Search Quality Team Note: if you have an account in Google's Webmaster Tools, you can verify the authenticity of this message by logging into [login to view URL] and going to the Message Center, where a warning will appear shortly. ========================== we want a pro to fix the problem and clean the site form Malware. thank you Saleh Ahmed