What that means is that some bast@&#%$! has hacked his site and installed malicious code that will install a virus onto your computer. Your anti-virus program prevented it from happening.
You can wait to see if Raymond responds and give him the chance to find the malicious code on his site and remove it, or you can report it to Google (
Google Safe Browsing: Report a Malware Page) where they will give it a thorough check and block the site if it is indeed downloading a virus or Trojan. The block will remain intact until the website owner emails Google to resend their spider bots back to the site to check on the cleanup. This can take from 3 days to 3 weeks, dependent on how soon Google resends their bots.