Nah, I could never really get to grips with AOE3, sorry
Guild Wars, on the other hand, I r pr0 warrior.
If you haven't already got it, its probably not worth getting it now (unless you just buy all the PvP unlock packs) since GW2 is scheduled for 2010.
Its a competitive online RPG. The GvG battles can be so intense - 8v8, a base each - win conditions are kill enemy guild lord npc or get all the enemy team to 60% death penalty (you get 15% for each death).
*Most* stuff is pretty balanced, so its a great game if you've got a competitive streak.
Going for a tournament with RL prizes in July, so hopefully I, and the rest of my guild (not sure which players we're taking atm), will be on top form.
Maybe I'll see you guys again in GW2 (shameless plug) or maybe on Age of Mythology again some day (I'm at uni, my copy of AoM is at home in the other side of the country

).