What do you exactly do to can deploy it?

I read a lot of posts and documments and I'm not able yet to deploy the report.

I'm not a DBA and I've read this post: http://www.sqlservercentral.com/Forums/Topic831821-162-1.aspx#bm832507

But I'm not sure were I need to give access to the user.

I also tryied this: http://www.gotknowhow.com/articles/reportserver-permissions-granted-are-insufficient-for-performing-this-operation-rsaccessdenied

But every time that in Visual Studio I try to Deploy the report, request me the user and password and althow I use the proper user, never accept it and I cannot deploy.

Thanks in advance for your help.