A Question about Dialog

[Pashers]

I may seem really simple for this but I have a couple of questions I could use help with.

1. How do I change the location of my dialog box, as it is currently in the middle of my game screen?
and
2. How do I change the background and border of my Dialog box?

Any help would be much appreciated. Thank You.

[Khris]

Please state which version of AGS you're using (2.72 or latest beta).

I assume the former:
In General settings / Dialog, there's an option "[ ] Dialog options on GUI  [   0]"
If the box isn't checked, Dialogs will use the default GUI, a black rectangle at the bottom of the screen.

If it's checked, AGS expects the number of a GUI. You can edit that GUI in the usual way, including making it a Text Window GUI.
So to change the background or the border, select the GUI and edit it.
If the GUI is a Text Window GUI, it will always be centered on the screen. If it isn't, you can specify the coordinate of the top left corner as usual.