I was wondering if its possible to port over old Team Fortress Classic maps to Team Fortress 2 ? I have had alot of people asking for someone to port over Crossover,Badlands,and Rock2. If i could port them over and just retexture that would be great 
It is quite possible. I actually just finished a beta of Rock2, and will be releasing it shortly
What did you use to port that over ?
Nothing, to speak of. I printed the outline and made the map from scratch.