Good morning Alvaro, this forum is for helping customers interoperating via our open protocol documentation. Your issue does not appear to be related to our protocol documentation. Your question may be better answered by posting on the 'SQL Server Setup & Upgrade' forum at
http://forums.microsoft.com/msdn/ShowForum.aspx?ForumID=95&SiteID=1.
Regards,
Bill Wesse
Escalation Engineer