A common problem is how to check what is the version of the Sharepoint or WSS we have installed, well here is a quick guide on how to check for the current version and which version corresponds to each install.
A post from Penny Coventry, how to find the level of Sharepoint you are running.
Interesting post on how to find the versions of SharePoint installed in the farm.
http://home.dzeee.net/blogs/sp/Lists/Posts/Post.aspx?ID=52
http://home.dzeee.net/blogs/sp/Lists/Posts/Post.aspx?ID=52
has now moved to
http://dzeee.net/sharepoint/post/2010/01/17/Versions-of-SharePoint.aspx