overiding ssh user

Hi all,

I have the following problem

I need to download a svn project into a computer. In that computer I'm
'userA'. But in the server I have no access as userA, instead I have an
account as 'userB'. The server only accepts ssh access.

The project I want to download has externals definitions.

If I say

svn co svn+ssh://userB@server/project/path

as soon as the externals are to be downloaded, I am prompted for
userA@server, because externals have no username specified.

I've tried to create an alias for ssh, in order to force it to be ssh
-luserB but it does not work.

I've also tried using svn --username but it also does not work for the
externals.

I know that it must be socumented somewhere (I'm investigating it) but
I'm quite in a hurry, so I ask you also in the meanwhile.

Thank you very much.

Ignacio García

-- 
May the source be with you
---------------------------------------------------------------
Ignacio García Fernández                  Instituto de Robótica
ignacio.garcia_at_uv.es                 Universidad de Valencia
http://robotica.uv.es/~ignacio/            Tlf. +34 96 354 3564