text: i need some source code for mobilevb.?   try .net framework sdk. it has plenty of samples in all .net framework technologies. and it is free :)  you can donload the sdk from http://www.microsoft.com/downloads/details.aspx?familyid=fe6f2099-b7b4-4f47-a244-c96d69c35dec&displaylang=en  you can aslo check the visual basic 2005 express. it is available at: http://msdn.microsoft.com/vstudio/express/default.aspx