Use the same skin template on all pages, then login as an administrator and go to the settings for the Home page. Under Advanced Settings > Appearance, there is a field named "Page Header Tags." Enter the styles specific to the Home page in this field within a block.

The style block will be injected into the page header *after* the skin stylesheet references, thus overriding or adding the style attributes specified in this field. This will allow you to add the border attributes which will only be displayed on the Home page while the rest of the site will use the skin stylesheet as defined.

Nik