Heh, no worries.
This is the
Thrash Blade. The quests (Horde and Alliance) are at the bottom of the page. Basically you have to clear Maraudon or, at least, find a group with the scepter and do a Princess run cause she's all you need to kill for the quest.
I usually find it to be a waste of money to buy BoE blues or purples from the AH unless you plan on stalling in a certain bracket for PvP or whatever. Otherwise you always, always, outlevel your equipment far too quickly.
If I can be so bold as to suggest a build, I'd say take a look at
this. IMO a basic level 40 build. The 3 points in Shield Spec could be relocated to Toughness of Anticipation as you see fit. I went with Shield Spec but if I had to redo it I'd pick 3/5 Anticipation instead I think. Blocking more is very nice but Reckoning and Redoubt only proc on attacks that damage you so you must not block *too much* damage. =/
Anyway, from that build you can probably go and max 1h Spec or take Ardent Defender, up to you. If you plan on getting Avenger's Shield (which I picked because I'm on a PvP server) then max both and put one point somewhere, doesn't really matter much. Spell Warding can be nice since you have nothing much to use against casters. 2%/4% damage reduction is nice with your auras on top of it.
Mess around with it as you like but I wouldn't suggest going into Holy until you have all the highest desired tier from the Prot tree. You could, in fact, only get Holy Shield and go Holy after that. It's up to you.