Post is backwards (kinda)

[TSHO44]

When someone posts, there post is on top of the first post. I don't know where the setting is for this.
If you are a guest, you see the newest post under the main post. If you are a member its above, what the heck?
Many thanks for the help, as I am a noob.

[Paul M]

User CP > Edit Options > Thread Display Options > Thread Display Mode

[TSHO44]

I don't see it. Is this under thread display options (showthread) ? There is nothing about a display mode, or I am blind.

never mind.