Hi all...I&#039;ve created a file and named it Math.vb..<BR>Imports System<BR>Imports Microsoft.VisualBasic<BR>Namespace DotNetMath<BR> Public Class Operations<BR> Function Adding(ByVal a As Single, ByVal b As Single)<BR> Adding = a + b<BR> End Function<BR> End Class<BR>End Namespace<BR><BR>Now I build the solution in vs...but is doesn&#039;t create a dll...what am I doing wrong here? please help..thanks.<BR>