try here - How To Customize Join Page pretty good tutorial on how to do what your after...
it was a short link service i was using, when info is easy to find on forums or via google i use that service lol im a cheeky monkey... very naughty lol
To make ur sign page look good go to /ow_system_plugins/base/controllers/join.phpThanks
look for
if ( $question['realName'] == 'username' )
Then, under that, add this:
$this->getElement($question['name'])->addAttribute("placeholder", "Username");
you can do same for the rest of the fields so that the input placeholers will be assigned inside the textboxes instead of beign used in the label tags as on https://www.imutr.com
also In order to style the page to remove some elements unwanted like the menu and the header bar, /ow_system_plugins/base/views/controllers/join_index.html
and add the tags
{style}
.whatever_you_want_to_remove {
display:none !important;
}
{/style}
its good to use important as it helps hide the div and overwriting fast the divs display status.
you can add more styles and elements in thr join_index.html
Just got a little free time to post this