How to put one theme's contact form in to a another theme

Hi guys,

What i want to know is to have a perfect simple custom contact form to be included in a wordpress page . But the problem is most of the contact form plugins i found in wordpress download section are not looking nice . I want a very simple, but nice looking contact form . So I have a idea of putting one theme’s contact form ( i found a theme with a nice contact form, which is also short code available )to my new theme . Is this possible ?

Can you please explain me how to make this work ?

Thanks,
Mebox .