Accents in PHP parameter

[Webmaster - Ayto. Las Palmas G.C.]

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Hi, im trying to wget the result of a php page that needs parameters 
that use special characters (mainly accents).

===> wget "http://10.1.1.230/php/send2id.php?msg=á é ñ"

or

===> wget "http://10.1.1.230/php/send2id.php?msg=%E1%20%E9%20%F1";

Getting an error:

--14:13:04--  http://10.1.1.230/php/send2id.php?msg=%E1%20%E9%20%F1
          => `send2id.php?msg=á é ñ'
Connecting 10.1.1.230:80... ¡Connected!
14:13:04 ERROR 406: Not Acceptable.

Is there a way to solve the problem?

Thanks in advance.

==> system info <==
GNU Wget 1.7
Red Hat AS 2.1
==> system info <==