mssql with ejabber

Can anyone help me with this problem - i nead configure ejabberd with mssql suppor via odbc, but when i set auth method as odbc
when i try to run ejabberd i have a error:

** {'module could not be loaded',[{ejabberd_odbc,escape,["sdf"]},
{ejabberd_auth_odbc,try_register,3},
{mod_register,try_register,3},
{mod_register,process_iq,3},
{ejabberd_c2s,wait_for_auth,2},
{gen_fsm,handle_msg,7},
{proc_lib,init_p,5}]}