How to mak the form field longer

Hi,
Since cf7 is not delivering email even when my mail server is working fine I had to swap to visual form. Hence, how can I make the subject field longer as hsown in this screenshot: http://awesomescreenshot.com/0bd5ap3n05

Also, how can I hide the credit text of the visual form right in my email as shown in this shot: http://awesomescreenshot.com/0095ap4k2d

With Regards