These are the version numbers of VB.NET and the versions of the .NET Framework they can target:
VB.NET 2002 (7.0) : .NET 1.0
VB.NET 2003 (7.1) : .NET 1.0, 1.1
VB 2005 (8.0) : .NET 2.0
VB 2008 (9.0) : .NET 2.0, 3.0, 3.5
VB 2010 (10.0) : .NET 2.0, 3.0, 3.5, 4.0
From 2005, Microsoft have offered a free Express edition of the VB IDE, plus separate versions for C#, C++ and ASP.NET (with VB and C#). The Express editions don't provide as many features as the paid-for editions, so there are certain things that your VS.NET 2003 can do that VB Express 2010 can't, but if you're not using those features specifically then you really should upgrade. The VB IDE, the VB language and the .NET Framework all have lots of significant new features. If that's not an option, let us know and we can concentrate on what you do have. Otherwise, you can start looking at all that information about the DataGridView.