you can build a .tpl for each logo/etc. you want in that box area or you can build one with all the logos/etc in one tpl.
I would recommend you put one logo/etc. in an individual tpl for each..that way it is easily changed/added/deleted etc.
my tpl named "authorizenet_logo.tpl in the store's root in my case located at ecomm/authorizenet_logo.tpl
here is the code I used..
<table width="100%" border="0" cellspacing="1" cellpadding="2">
<tr>
<td align="center" valign="top">
[img]{$ImagesDir}/anetpow.gif[/img]
</tr>
</table>
once you build the tpl you want then go to ..customer/home.tpl
open home.tpl and then
add the link to your new tpl under the last menu file call which is usually help.tpl
my home.tpl currently reads as follows:
{* include file="help.tpl" *} (note that I have this disabled in my design
{include file="secure_cert.tpl"}
{include file="bbbonline.tpl"}
{include file="scanalert.tpl"}
{include file="cspringsonline_link.tpl"}
{include file="authorizenet_logo.tpl"} the new one you would add with your named file
the beauty of making one logo per tpl is that you can move them wherever you want in your design..
OBTW:
here is my code for my credit card image string:
file name: ccards_accepted.tpl
<table width="100%" border="0" cellspacing="1" cellpadding="1">
<tr>
<td align="center" valign="top">
[img]{$ImagesDir}/payments_accepted.gif[/img]
</tr>
</table>[/img]