Celebrity Fashion Watcher: Suspicion on a virus

I got hijacked / redirected to Security Threat Analysis, a fake online antivirus scanner pushing a Scareware / Fake Security Software program on the victim’s computer. My desktop disappeared completely, leaving just the "Warning! Your computer is at risk of malware attacks". The more you wish to leave the page, the more insistent the fake warnings or download attempts become. When I do open my website, there is a redirection to a new page. ? I also sense my website has multiple issue, sometime in Dec'09, my Google PR was dropped from five to zero. Googlewebmaster stopped crawling. And then I took a break from blogging for sometime, after consistent request some friends I started blogging again. Now when I see google webmaster started crawling my site but now a victim of new problem. ? [[login to view URL]][1] ? I am attaching the screenshot for your reference. Detailed error description can also be seen here..? <[login to view URL]>? I would require some to fix the below problem: 1) Get rid of this redirection? problem, my site should resume normal 2) Sitemap issue should be fixed and? Google webmaster should crawl my site normal.