Found a way to run macro..but still cant find solution for the first question
oXL.Run("TEST",Type.Missing,Type.Missing,Type.Missing,
Type.Missing,Type.Missing,Type.Missing,Type.Missing,
Type.Missing,Type.Missing,Type.Missing,Type.Missing,
Type.Missing,Type.Missing,Type.Missing,Type.Missing,
Type.Missing,Type.Missing,Type.Missing,Type.Missing,
Type.Missing,Type.Missing,Type.Missing,Type.Missing,
Type.Missing,Type.Missing,Type.Missing,Type.Missing,
Type.Missing,Type.Missing,Type.Missing);