[eluser]jeffpeck[/eluser]
You can pick up the post data using $this->input->post('INPUT_NAME')
INPUT_NAME is the name of the input from the previous page.
So, if you have:
<input type="text" name="first_name"/>
<input type="text" name="last_name"/>
You can get those values on submit through $this->input->post('first_name') and $this->input->post('last_name')