run time error 3027

i have created a table called i with only one attribute name varchar(100) i connected to vb6 using odbc i am getting the error
run time error 3027
cant update: datbase or object is read only
i have only one line of code in vb
data1.recordset.addnew
plss help
guys
thanks a lot

note:i have to do it in odbc only