http://msmvps.com/blogs/bradley/archive/2007/01/04/how-to-tell-if-sbs-2003-r2-is-installed.aspxFrom the partner newsgroup I spotted this on how to tell if R2 is installed... Basically speaking, we have a registry key which indicates if the SBS Server 2003 R2 is successfully installed: SBS related Registry Keys: * HKLM\SOFTWARE\Microsoft\SmallBusinessServerenCommunityServer 2008.5 SP2 (Build: 40407.4157)http://msmvps.com/blogs/bradley/archive/2007/01/04/how-to-tell-if-sbs-2003-r2-is-installed.aspx#1597781Mon, 21 Apr 2008 08:34:51 GMTd67277c4-116b-43f1-b688-e9ef184ea916:1597781Carl Pickering » How to tell if SBS R2 is installed<p>Pingback from &nbsp;Carl Pickering &amp;raquo; How to tell if SBS R2 is installed</p> <img src="http://msmvps.com/aggbug.aspx?PostID=1597781" width="1" height="1">http://msmvps.com/blogs/bradley/archive/2007/01/04/how-to-tell-if-sbs-2003-r2-is-installed.aspx#473716Sat, 06 Jan 2007 13:59:29 GMTd67277c4-116b-43f1-b688-e9ef184ea916:473716Nick Whittome - "The Naked MVP" <p>How to tell if SBS R2 is installed Thanks to Susan for pointing this out , as the question has come up</p><img src="http://msmvps.com/aggbug.aspx?PostID=473716" width="1" height="1">http://msmvps.com/blogs/bradley/archive/2007/01/04/how-to-tell-if-sbs-2003-r2-is-installed.aspx#470365Fri, 05 Jan 2007 02:44:15 GMTd67277c4-116b-43f1-b688-e9ef184ea916:470365Absoblogginlutely<p>A very nice write up on how to tell if SBS 2003 R2 is installed - of course running winver.exe would be much nicer and consistent with the other versions of Microsoft's os....</p><img src="http://msmvps.com/aggbug.aspx?PostID=470365" width="1" height="1">