[eluser]alejandra[/eluser]
I found the answer to my question it was a cookie problem I the cookies in my browser and the installation worked fine.
These threads help me:
<a
href="http://ellislab.com/forums/viewthread/54019/">http://ellislab.com/forums/viewthread/54019/</a>
<a
href="http://ellislab.com/forums/viewthread/51826/">http://ellislab.com/forums/viewthread/51826/</a>
Thanks for the help