Hi Bruna,
Do you still have this problem? You can Always contact your Regional Microsoft Service Center if you continue to have issues login on to the MCP page.
http://www.microsoft.com/learning/en/us/help.aspx#fbid=nTemxTEp9eN
Have you associated your MCP ID with a Windows Live account? (that is required)
When you see answers and helpful posts, please click Vote As Helpful, Propose As Answer, and/or Mark As Answer
MCSE:Server Infrastructure, MCSE:Desktop Infrastructure, MCSA Server 2012, Citrix CCIA & CCEE, Cisco CCNA, VMware VCP 3/4/5 Blog: http://www.citrix-guru.com and http://www.rds-support.eu Twitter: @dnyvandam