Yeah, Rio's probably going to move your thread. (to the writer's section, I don't hang out there so I don't know the specific location. ) But while it's here....
It's called a DIALOGUE TAG.
So when done correctly, looks something like this: (Courtesy of Peanuts)
"I will love you forever." he said.
"Yes yes yes!" she said.
"Forever being a relative term." he said.
She creamed him with a waffle iron.
Now, one musn't always use "said" for a dialogue tag, it's quite dull after awhile, actually. Keep in mind though that they are, for the most part, invisible to the reader.
Shouted, sighed, whispered, breathed, snorted, guffawed, laughed, chuckled, sobbed, cried, bleeped, blipped, etc...
Get a thesaurus to help you with some more original
A word of caution. Some writer's like to use verbs as dialogue tags. While this works under some cases ("He grinned") it is often times sloppy and over down. Use sparingly.
(I mean, come on, how many people can actually "bark" an order for a three-cheese pizza?)