SVN log character encoding.

Hi! I'm using svn and I'm a spanish speaker. I've noticed that when I
put "extended" characters in muy commit messages, they are not stored in
the right way (or not diplayed well with svn log). I'm using ISO-8859-1
(editing with vim the messages) and tried UTF8 without success.
What encoding is svn using? How can I make my "extendended" characters
(á,é,í,ó,ú,ü,ñ,etc) stored (or displayed) in the right way?

(please Cc me since I'm not subscribed to the list).

-- 
Leandro Lucarella @ MEcon                       .-----------------------------.
                                               /  Powered by Debian GNU/Linux |
.-----------------------------------------------------------------------------|
|  GPG Key:               http://bal748.mecon.ar/~luca/public_key.gpg         |
|  GPG Key Fingerprint:   716E 4896 93B2 640D 917D  96D8 4B16 3177 C864 D90B  |
`-----------------------------------------------------------------------------'
Los libros constituyen un mundo mejor dentro del mundo.
		-- Alexander Smith. (1830-1867) Poeta escocés.