how do i put a custom map from 1.04 into 1.1 ?

[mikebefore]

i love how the 1.04 official maps have a new feel to them on 1.1. it's like the mappers really did some things you can barely notice like adjust the spawn points or small graphic or geometric details. running is slightly slower in 1.1 but not too much so you don't fly all over the place as much and can catch the scenery of the map a little more.