im tryin to do seige maps, but, it doesnt work...

ok this is alot but if you can just answer one it would help some.

---my .scl;.seige and .team files dont just say the name like arena files, the say "(mapname).seige" , does that have any thing to do whith it?
---do you need to put two different files for each team?
---do the names of what you can be have to be like the game (e.x.: demolitions;scout;heavy weapons)

pls help with some or if you could give me your e-mail and help me that way.