First, SQL Server 2005 will not be supported on Windows Server 8 (in any case of the Windows 8 Preview!)
And what versions are supported on Windows Server 8?

Here they are:

• SQL Server 2008  SP3 and above
• SQL Server 2008 R2  SP1 and above
• SQL Server 2012

So take a closer look to your SQL Server Builds and be prepared!

Microsoft SQL Server 2012, 2008R2, 2008, 2005, 2000 and 7.0 Builds

I wish you a nice day,
tosc