Here are some articles about web form design and styling.

Table-less web forms:

• http://jeffhowden.com/code/css/forms/

  http://www.quirksmode.org/css/forms.html

  http://www.aplus.co.yu/css/forms/?css=2

Article about 'enter' key behaviour manipulation:

• http://www.cs.tut.fi/~jkorpela/forms/enter.html

Article about web forms interface design:

• http://www.lukew.com/resources/articles/web_forms.html

Styling exemples of "submit comment" blog forms (good for inspiration):

• http://www.smileycat.com/miaow/archives/comment-form-showcase.html