asp.net - how to insert records from a aspx.vb file to a mdb datase code -

hey there evening can tell me whats wrong code? i'm getting 'operation not updateable' error 1 below

 server error in '/' application.  operation must use updateable query.   description: unhandled exception occurred during execution of current    webrequest. please review stack trace more information error    , originated in code.     exception details: system.data.oledb.oledbexception: operation must use  updateable query.    source error:          line 20:          cmd.parameters.addwithvalue("paswords", textbox4.text)       line 21:          conn.open()       line 22:          cmd.executenonquery()       line 23:          end using       line 24:          end using 

my code

    imports system.web.security     imports system.data     imports system.data.oledb     imports system.configuration     imports system.web.configuration      partial class registration     inherits system.web.ui.page      protected sub button1_click(byval sender object, byval e system.eventargs) handles button1.click         dim connstring string = "provider=microsoft.jet.oledb.4.0;data source=|datadirectory|onlineregistration.mdb"         dim sqlstring string = "insert registration (firtsname, telephone, email, paswords) values (?,?,?,?)"         using conn new oledbconnection(connstring)             using cmd new oledbcommand(sqlstring, conn)                 cmd.commandtype = commandtype.text                 cmd.parameters.addwithvalue("firtsname", textbox1.text)                 cmd.parameters.addwithvalue("telephone", textbox2.text)                 cmd.parameters.addwithvalue("email", textbox3.text)                 cmd.parameters.addwithvalue("paswords", textbox4.text)                 conn.open()                 cmd.executescalar()             end using         end using     end sub  end class 

that error "must use updateable query" tipically thrown when mdb file write-only, or when there no write permission on file.