[support] Customizing Fields?

[Ian Elwood]

I would like to create a new link field that has a text field and a URL 
field.  This exists in Drupal, it is now called, "Link" in the Create 
new field list.

I would like to make the URL field non-required, so that if users enter 
text, it will show up, but if they don't put in a URL, they can still 
enter the text--it just wont show up as a link.

Does this functionality require coding?  If so, how would I go about 
changing the PHP to do it?

Thanks!

--ian--