There is an article about Guille in Clarin:
"Coria debe recuperar la alegría perdida" (http://www.clarin.com/diario/2006/02...es/d-06010.htm
If I got it right, Guille is practicing with Capitaine and Diego Moyano in Venado Tuerto and nobody knows yet who will be his next coach. It won't be Rodriguez (for personal reasons, Rodriguez has a baby and doesn't want to travel around the world). Maybe Guille will just take a coach for the big tournaments, like Roche with Federer or Mastelli with David. Most of all, he needs a change to enjoy again his tennis.
But the Spanish speakers can probably tell us more.
Julio wrote in GM he heard on radio that Guille is practicing with the rest of the DC team, so I'm not sure the article is "up to date".
As for the Davis Cup, all the articles I've seen say that Chucho will probably be the first option if Gaudio can't play, not Guille.
But Gaudio isn't officially out yet anyway.