For your first problem you can put the HTML code for trusted logo in
/skin1/home.tpl
Search for the following code:
<TABLE border="0" width="100%" cellpadding="0" cellspacing="0" align="center">
<TR>
<TD width="6"></TD>
<TD width="150" valign="top">
{if $categories ne "" and ($active_modules.Fancy_Categories ne "" or $config.General.root_categories eq "Y" or $subcategories ne "")}
{ include file="customer/categories.tpl" }
{/if}
{if $active_modules.Bestsellers ne "" and $config.Modules.bestsellers_menu eq "Y"}
{ include file="modules/Bestsellers/menu_bestsellers.tpl" }
{/if}
{if $active_modules.Manufacturers ne "" and $config.Modules.manufacturers_menu eq "Y"}
{ include file="modules/Manufacturers/menu_manufacturers.tpl" }
{/if}
{include file="customer/special.tpl"}
{ include file="help.tpl" }
[img]{$ImagesDir}/spacer.gif[/img]
</TD>
Enter your code between the last two lines.
Best regards,
Alin