I'm working for a company that is using SharePoint.
The colleague that was in charge of SharePoint left the firm, and for the last 2-3 years he didn't do anything with it.
For that reason we are using SharePoint Services 2.0 SP2.
Now I would like to upgrade to the newer version. My plan is to upgrade to SharePoint Services 3.0 SP2.
I have around 50 users that are using SharePoint 24/7.
I don't have real experience in work with SharePoint, or with backup/restore.
Also, we are using SQL Server 2005 Pro.
Can someone explain to me how to make a backup of my current version (do I backup only SharePoint or SQL)?!
How do I build a test machine on which I can test migration/updates before making the same changes on the production machine (I would like to make a copy of my environment on different PCs (different hardware), and perform all tests on that PC)?!
What is the best way?