http://www.microsoft.com/exchange/downloads/2003/sp1.asp
And YES you should install this on SBS 2003 boxes!
![[There's a reason that Yoda is the unofficial mascot of SBS. Size indeed matters not.]](http://www.sbslinks.com/images/headertop.png "There's a reason that Yoda is the unofficial mascot of SBS. Size indeed matters not!")