Sql – install Sql Server 2008 on the same machine where Sql Server 2005 already installed

side-by-sidesql-server-2005sql-server-2008

I have Sql Server 2005 Express installed on my computer, and I want to install Sql Server 2008 Express as well. What should I consider before doing this additional installation?

thanks.
bk

Best Answer

They should be fine together, just make sure they are using different ports (the default is 1433) if they are communicating over TCP/IP. Why do you need both versions?