There is plenty of material available to help you upgrade to SQL Server 2008. This blog is intended as a short list for the most useful guidance that I have found. And you may have different experiences upgrading from SQL Server 2000 and SQL Server 2005 so please take the time to do proper preparation...

Some customers prefer to upgrade to SQL Server 2008 by detaching all databases from their SQL Server 2005 instance and then reattaching them to a completely new SQL Server 2008 instance. If you choose this upgrade strategy, you should be aware that you cannot detach an msdb database from a SQL...