|"I mean this thing is an alienware you would think it would handle almost anything"|
But it's a lower end Alienware.
"I think it might be my processor or vista"
I highly doubt it. Maybe you just have a lot of garbage loaded on your machine?
"It rarely lags with other games but they are not as complex as dow2"
DoW 2 is NOT a complex game...just look at the system requirements:
Maybe it's your internet connection?