A frequent question in the  forums is "How to upgrade my DotNetNuke install".. I thought i'd post a brief guide here for easy ref

• download the upgrade package of the version you wish to upgrade to
• unzip or copy or ftp all files in the zip file to the root of your dnn application
• rename web.config to something like web.config.date.resources (you can use any other name, but the date will make it easy to keep track of older webconfigs, the .resources extension makes sure the file cannot be downloaded)
• rename release.config to web.config
• change the following things (copy from old web.config file):
  • 2 sql connection strings
  • machinekey (under system.web)
  • optionally objectQualifier and/or DBO (under  )
  • optionally make any other custom changes you had in your old web.config
  • save the new web.config
• browse to your site, upgrade will start automatically

if you want to prevent visits to your site while you are upgrading, you can do the following:

• before copying the upgrade files to your site, put a file called "App_Offline.htm" in the root of your dnn installation, this will take the application offline (see here for more info: http://weblogs.asp.net/scottgu/archive/2005/10/06/426755.aspx )
• Change the AutoUpgrade value to False (under appsettings in web.config). This will prevent the dnn autoupgrade feature.
• You can manually start the upgrade by browsing to this url: http://yourdomain/install/install.aspx?mode=install

Comments on this are welcome, but please no discussion!