"I had no idea the glan used 4 lines (2pair)"
I never said that, I said: "glan" uses 4 pairs, while 10/100Base-T uses only 2.
Here's a couple of links for you:
Where I originally found out about this:
<A HREF="http://www.tomsnetworking.com/Sections-article41-page4.php" target="_new">http://www.tomsnetworking.com/Sections-article41-page4.php</A>
To back it up:
<A HREF="http://www.cisco.com/warp/public/cc/techno/media/lan/gig/tech/1000b_sd.htm" target="_new">http://www.cisco.com/warp/public/cc/techno/media/lan/gig/tech/1000b_sd.htm</A>
How to wire Cat5e (in case you need it
):
<A HREF="http://www.lanshack.com/make-cat5E.asp" target="_new">http://www.lanshack.com/make-cat5E.asp</A>