going to europe

[unlucky513]

i'm thinking about taking a trip to europe with the girlfriend next summer.. i had a few questions, hopefully enough OOT'ers have made the trip accross the pond to answer.

-where did you get your plane tickets? how much were they?
-how much can i expect to spend on a 2 or 3 week trip?
-what cities did you go to? how'd you get around?

any other advice or whatever is appreciated.