Sharepoint

Migrating Sharepoint from Server 2003 to Server 2008 R2 - what fun.  The stupid thing is, my org only uses it for a calendar, nothing else, nothing at all.  So I decided to look and noticed first that our system was running Sharepoint services 2.0 - I upgraded it 3.0.  That was pretty straight forward.  Then  I moved the content database from the Windows Internal Database to SQL Server 2008.  Now I need to figure out how to move this one calendar on Sharepoint Services 3.0 on the old Windows Server 2003 box to Sharepoint Foundation 2010 on Server 2008 R2.  I think - all though I could be wrong - I just have to make the database read only - setup a calendar identically on the new server and point the content databse on the system to the read only database and make it read/write again. Of course, I guess I have to remove it from the old system then.  Then I am sure I have some DNS settings I have to change as well.  I don't know.  The whole thing is complicated to me.