Tami I would be best for you to start a new topic by clicking on the button "new topic" at the bottom of the page. Your questions won't get mixed up and lost in someone elses' post.
Cervical Mets refer to cancer-containing lymph nodes of the neck. In latin cervix means neck (and in females the cervix is locted in a neck like part of the uterus.) mets is short for metastatic (or cancer spread)
more on the cervical nodes can be found here:
http://www.emedicine.com/ent/topic306.htm and here:
http://anatomy.uams.edu/anatomyhtml/lymph_head&neck.html 3d Conformal or 3D radiation is not quite the same as IMRT although IMRT is a 3D process. Both types are computer "guided" but IMRT is more complex. Which type your mother receives is partly what is available and partly what will do the best job for her.