First little problem I came across when installing SharePoint 2010 was the following error:
SQL Server at XXX has an unsupported version 10.0.2531.0. The minimum required SQL versions are SQL Server 2005 SP3 CU3, version number: 9.00.4220.00, downloadable from “http://support.microsoft.com/kb/967909”, or SQL Server 2008 SP1 CU2, version number 1.00.2714.00, downloadable from “http://support.microsoft.com/kb/970315”.
CU stands for cumulative update. I was missing the cumulative update for SQL Server 2008, once that was applied setup would allow me to continue.
Edward Wilde 
It helps me a lot. Thanks very much.