Tekkit server issues

[SLAS]

so guys the thing is ive been trying to get a tekkit server running for a while and well it hasnt worked out. ive currently got a vanilla and bukkit server running but i really would have liked to get tekkit. the main problem is when i run the server it comes up with ERROR could not reserve enough space for object heap. could not create the java virtual machine. im sure this can be fixed but i dont know how so i would be grateful for any help.

FYI: i have the very latest version of the tekkit server