Anything i need to know in terms of triggering and terrain? I am a relatively good map maker and i have SCMDraft 2.

Center a location on an arbiter, make a little corner, have a selection system to spawn units under the arbiter. It's quite simple.

Terrain-wise... http://Falkoner.CoW.GooglePages.com/Tutorials.html

Thanks. Your always a help xDD

copy and paste is easiest with terrain have fun making the map =o

Also, ive noticed tat whenever you start an rp, you see observers explode. Is this required? And if it is, why?

No it isn't, there is a Fog Of War option in SCMDraft2 that does the same thing.

It is not required, but in the early days of RP making we didn't realize you could remove the fog of war from the map, so we had to use an alternate method of revealing. And since you can't remove map revealers, and you can kill off observers, it helped reduce CCMU. Also, if you like I posted a template for my RP console. If you've ever played RP - Feyvern or RP - Lathirion you will be familiar with it. http://www.staredit.net/files/311/
There's no terrain but it will save you a lot of trigger work if you want to use it.

Thanks. Also, how big should the location centered on the Arbiter be?

Whatever the size you want it to be.

Also, should i use any other Computer players except for the Nuetral Player?