Add this code to the Make VS.NET step's vbld_StepDone script event (Step -> Properties -> Script Editor -> Edit -> Insert Event -> vbld_StepDone [
http://www.visualbuild.com/Manual/scriptevents.htm]):
vbld_FSO().CreateTextFile(Application.ExpandMacros ("%TEMP%\vs.txt"), True).Write( _
Application.Macros(vbldMacroSystem)("LASTSTEP_OUTP UT"))