I am glad you got it sorted, to make your own waypoint use /way xx yy
ex:
/way 58 34
/way 58.00 34.00
However, more information will be displayed if you just type /way and take a look at the examples, the ones I showed isnt dedicated to a zone, where as if you use /way Shadowglen 45 74 it will point to the respective co ords in that zone. I hope this helps.
I forgot to mention that tomtom waypoints also work, most people post tomtom waypoints in wowhead.