Shared memory failure?

First off, I'd just like to thank everyone for their help with my last
problem. It worked, but now it gives me another error:

IpcMemoryCreate: shmget failed (Permission denied) key=5432010, size=144,
permission=700
This type of error is usually caused by an improper
shared memory or System V IPC semaphore configuration.
For more information, see the FAQ and platform-specific
FAQ's in the source directory pgsql/doc or on our
web site at http://www.postgresql.org.
IpcMemoryAttach: shmat failed (Permission denied) id=2
FATAL 1:  AttachSLockMemory: could not attach segment

I looked through the troubleshooting guide, but it wasn't very helpful.
Anyone know how to get around this? Thanks again.

Sincerely,

Justin Stayton
CometFly Media, LLC.
jstayton@cometfly.com