[gentoo-user] First Portage Hick-up, Chokes on Java

My first install of Gentoo, and I'm pleased by how far I've progressed on 
my own, not being a programmer or computer person, but I'm a bit wary of 
proceeding further without advice.

I was trying to emerge some several files which had a dependency on 
java-sdk-docs.  Below is the message from emerge.  More information will 
follow.

!!! dev-java/java-sdk-docs-1.6.0-r1 has fetch restriction turned on.
!!! This probably means that this ebuild's files must be downloaded
!!! manually.  See the comments in the ebuild for more information.

  * Please download jdk-6-doc.zip from
  * 
https://cds.sun.com/is-bin/INTERSHOP.enfinity/WFS/CDS-CDS_Developer-Site/en_US/-/USD/ViewProductDetail-Start?ProductRef=jdk-6-doc-oth-JPR@CDS-CDS_Developer
  * (select English and agree to the licence) and place it in 
/usr/portage/distfiles named as
  * jdk-6-doc-r1.zip. Notice the r1. Because Sun changes the doc zip file
  * without changing the filename, we have to resort to renaming to keep
  * the md5sum verification working for existing and new downloads.
  *
  * If emerge fails because of a md5sum error it is possible that Sun
  * has again changed the upstream release, try downloading the file
  * again or a newer revision if available. Otherwise report this to
  * http://bugs.gentoo.org/67266 and we will make a new revision.
  * Fetch failed for 'dev-java/java-sdk-docs-1.6.0-r1'

  * Messages for package dev-java/java-sdk-docs-1.6.0-r1:

  * Fetch failed for 'dev-java/java-sdk-docs-1.6.0-r1

So, I downloaded the file, renamed it and put it where it told me to. 
Then I found http://gentoo-wiki.com/HOWTO_Installing_3rd_Party_Ebuilds and 
I am trying to follow that.

I added PORTDIR_OVERLAY="/usr/local/portage /usr/portage/distfiles" to 
/etc/make.conf  The first because the wki said to, and the second because 
that's where emerge's message told me to put the file I downloaded from 
Sun.

I then added FEATURES="collision-protect ccache parallel-fetch" to 
/etc/male.conf for safety, even though I have no idea what it does.  I 
then checked out features with  emerge --info | grep FEATURES.  It told me 
that /usr/local/portage did not exist.

OK, so I created it.  Now, that is where emerge told me to put the file, 
but the fact that gentoo did not even create that directory gives me 
pause.

Bottom line:  I am being told I need this dependency, and I am not sure 
how to proceed in creating my own Ebuild to install it.

Am I even in the right ballpark here?

Thanks,
Bo Grimes