Developer Documentaton for VB , SQL project

my client has a project build in VB6 with SQL Server on back end. now i want its complete developer documentation so that future development by any developer is easy to do. Please send me detail proposal along with quoted price. keep in mind that there are about 100 tables in sql server and about 60 programming modules in VB project. in your proposal do mention what kind of documentation u will do means ER diagram, uml etc or what ever. this is an urgent assignment so please send me properly documented proposals at ur earleast ## Deliverables Soft copy of all documentation ## Platform Microsoft Windows