tried installing but get HTTP 404 NOT FOUND page

I have all my files uploaded and have mySQL set up already but i get a blank “HTTP 404 NOT FOUND” page… does anyone know what is wrong? The url i used was http://66.36.242.243/~txhxlwxg/blog/wordpress/wp-admin/install.php because my hoster is different than my domain name provider.. which i bought and masked.