mod_shared_roster_ldap module installation

hi,
I´m not able to install the module mod_shared_roster_ldap, altough I copied it in the folder bin.
do I need other files, where can I get them?
I´m receiving following error:

(ejabberd@localhost)7> pwd().
C:/Programme/ejabberd-1.1.2/bin
ok
(ejabberd@localhost)8> c(mod_shared_roster_ldap).

=ERROR REPORT==== 3-Oct-2006::18:06:46 ===
Error in process <0.317.0> on node 'ejabberd@localhost' with exit value: {undef,
[{compile,file,[mod_shared_roster_ldap,[report_errors,report_warnings]]},{c,c,2}
,{erl_eval,do_apply,5},{shell,exprs,6},{shell,eval_loop,3}]}

** exited: {undef,[{compile,file,
[mod_shared_roster_ldap,
[report_errors,report_warnings]]},
{c,c,2},
{erl_eval,do_apply,5},
{shell,exprs,6},
{shell,eval_loop,3}]} **
(ejabberd@localhost)9>

pls help!

thanks joe

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