18:16 ET CDW Computer raises Q3 guidance (CDWC) 41.30 -1.77: Company issues upside preannouncement for Q3 (Sep), expecting EPS of $0.58-$0.61 vs Multex consensus of $0.52; sees revenues of $1.125-$1.145 bln (Multex consensus $1.107 bln); says sales of Microsoft products were particularly strong in July due to changes in their licensing programs.