check out this form widget!
http://www.dhtmlgoodies.com/index.html?whichScript=form_widget_editable_select

It's a dropdown select list whose options are editable.

I would love to see this in Joomla. I had one that I got working in Joomla but it doesn't work in IE7. This works in IE7 but I can't get it into a content item.

BTW, LOVE the Forme. The other form components were so tedious it was easier for me to code it by hand and use an include file. Now there's finally one that can get the job done quickly and easily.

thanks for your suggestion. I want 1.0.4(when it's time will come) to have an interactive field config feature.. But no talking till then