if you want do serious cod mapping, i'd advice you to use the cod waw radiant.
the texture options there, smaller grids and grouping tools are far better and i dont want to miss them.
you can just rename then every texture and import it as well in the cod2 radiant.
by comparing the cod2 and cod5 *.map file structure you can delete the unused stuff and voila, you are able to create real eyecandy with ease