override the default list view style

. . . drupal comes with the default list-view type that adds node etc at the front page for example as node list view . . .
(If i add 10 nodes with the option :promote to front page: i will come up with a 10 node list view )
Taxonomy menu module inherits the same list view content presentation-theming technique . . .
So how do i ( find the .tpl.php files and which functions maybe in order 2 ) change this ?
I know there are other ways-modules for custom home pages or building taxonomy menus through views etc. . . .
I just want to transform the list view theme to a grid 4x6 for example view . . .so when i click to the front page
i wont get a list view but a grid view or when i click on a custom taxonomy-menu module page i will get another grid view.