create a popup and landing page with an embedded mailchimp form

Hi,

I want to get more email opt-ins from visitors to my site using a pop-up box that allows people to sign up for my Mailchimp lists.

I know that I can use your Mailchimp plugin and put the shortcode into the pop-up box plugin. BUT, this doesn't seem to allow me to nicely style the Mailchimp form.

Is there a way for your plugins to be used to create really nice-looking Mailchimp opt-in forms?

Thanks,
Dave