How to add library in project

I am new in b4a and have a question
about :

"... after copy the System.Data.SqlClient.Dll file and the MSSQL.Dll.!!!
...
Sub Globals
'Declare the global variables here.
End Sub

Sub App_Start
Form1.Show
cnDatos.New1
End Sub

Sub Button1_Click
If cnDatos.Open("Persist Security Info=False;Integrated Security=False;Server=XPS,1433; initial catalog=windip; user id=sa; password=12345;") Then
Msgbox("Conexion exitosa!!!","My First Program",cMsgboxYesNo,cMsgboxHand)
Else
Msgbox("Conexion ERRONEA!!!","My First Program",cMsgboxYesNo,cMsgboxHand)
End If
End Sub
...."


My question is where to copy lib an how to add to b4a project
Pleas help me
Thanks.