Simple check list to upgrade older version of DNN to DNN 4.41 or DNN 4.5

1. Backup Database, Backup All Files (in case for recovery)
2. Rename web.config -> oldweb.config
3. Extract DNN4.5 installation files over current installation (overright if file exists)
4. Delete web.config, Rename release.config -> web.config
5. Open web.config and oldweb.config in Text Editor (VS2005 prefer)
6. Copy "SiteSqlServer" line under <connectionStrings> from old to new
7. Copy "SiteSqlServer" line under <appSettings> from old to new
8. Copy "InstallationDate" line under <appSettings> from old to new
9. Copy "machineKey" line under <system.web> from old to new
10. Browser the web, it will automatically upgrade.