Yep, PC gamer here. My son is the console gamer; I've just never gotten a feel for it.
I don't build them but hubby does, and will hopefully build my next one (but not until this one dies). Mine is 3 years old, from Dell:
i7 920 @ 2.67GHz
GTX 260 graphics card
ViewSonic 27" monitor
Have mostly played MMO's (started with EverQuest over 10 years ago, then WoW, then Rift), and I'm currently playing Guild Wars 2 when time permits.