Is there a paid service at Heliohost? If not I'm changing the memory used in the file and you could run it. Is 512Mb ok or do I really need to put less?
It is the file "/CraftBukkit/RUN.sh"
Here is its content:
#! /bin/sh
BINDIR="$(dirname "$(readlink -fn "$0")")"
cd "$BINDIR"
java -Xincgc -Xmx1024M -jar craftbukkit-0.0.1-SNAPSHOT.jar