I stumbled upon this link...don't ask me how and what I was doing.... I am currently using the Zygor's version and its awesome for leveling. It is adjusted for 20-60 XP changes but not for 60-70. I used this one to level from 60-70 on one of my alt after patch 3.0 and it worked out very nicely.

I am not sure how to use the Derek's version but for Zygor's version put the 3 folders of the particular faction in the addon folder. Before you log on to ur character make sure that the addons are checked and also Load outdated addons is also checked. Once you log on with ur character you will see a ZG icon on the minimap and cartographer arrow. This is a complete step by step leveling guide addon so if you are just interested in leveling an alt this will help your mind numbing job easier. Now I understand these are suppose to be purchased but hey I found it online somewhere for free...so I have decided to share it.

This is a video on how the guide works:

http://www.youtube.com/watch?v=CX2HJlBuQVo

Here's the guide:

http://roa.kupatrix.net/guides.html

If posting this kind of links is against rules please remove the post else enjoy the leveling guides.

For what it's worth, I use TourGuide and TomTom.

More info here: http://www.wowinsider.com/2008/07/16/addon-spotlight-tourguide/

I use lightheaded and TomTom but lightheaded isn't really for leveling... but I love it!

Jut to be a bit clear this is an In-Game leveling guide....basically showing you where to go to pick up quests, which quests to pick up, where to go/what to kill to complete the quest with optimum route to complete the quests.