How to Insert Large rectangle banners instead of the smaller square?

[gxbodybuilding]

Im wanting to start customizing my vb5.
Id Like to add two large rectangle banners at the top.
One for the main site Logo banner, and One for the members Pictures banner.
Rite now I can only seem to set 1 smaller size square banner using the site builder.

Id also Like to be able to add the small square banner adds at the bottom of the page, below the footer tabs.
Is this possible?
Thanks for any help!

[AliMadkour]

You'll need to Edit titleimage Stylevar
AdminCP->Styles & Templates->Style Manager then choose Style Variable Editor from the drop-down menu and click go
Search Stylevar : titleimage edit it and click save.

You can as a temporarily solution edit footer template and add those banner to it.

[gxbodybuilding]

ok thanks! I followed the directions and this is where im now stuck.
ill post a picture to show.
Is there a way to expand or make that edit page full size? It seems to be a shrunken window that makes it hard for me to see and read.

- - - Updated - - -

The page on the rite I think is what Im wanting to get to?
Is there a way I can focus in on it? I tried to drag it, click it etc with no luck.
I had this happen on another page also. Like there are to many things open?
Im having to scroll it over, go up, scroll over etc to try and read it.