[philadelphia killing mach]

i had a clan ask me to alter the default maps (mohdm 1-7) by adding ladders or machine gun nests, etc.

anything special i need to know if all i'm going to do is add a couple scripts and brushes ? i noticed when i converted one back to .map, made my changes and created a new .bsp that all the entities (or at least the player spawn points) were gone. no big deal.

also, when i'm done modifying the map, should i keep it's original name so i can use the original .scr, .ui & .shader files ?