In need of custom warp plugin, instead of /warp it could be /flat or /pvp or /1v1 etc.. If you need more info skype: doggy3322 Thanks!
There are a lot of warp plugins. Just install one and then use http://dev.bukkit.org/server-mods/xsimplealias/ to alias "/warp pvp" etc. and it will allow you to make it so when you type "/pvp" for example, it will perform /warp pvp.