How many books are there and what are the names???

I dont think they are, L.J.Smith intended to leave the books at the Reunion but she got badgered by fans and carried on with The return: Nightfall, The Return: Shadows (To be released 16 March apparently) and then after that there is Midnight (Scheduled to be released on 1 July -not confirmed-)
Hope that helped a little x

the awakening
the struggle
the fury
the dark reunion

the return triology:
nightfall
shadow souls (march 16 2010)
midnight (december8 2010)

i'm not quite sure about the dates... :)

no the return vampire diaries books will be called the return trilogy which will be part of the vampire diaries books it will be part of the other vampire diaries books except the only difference is it the 3 books in the return series is that the title of each book will say the return nightfall return shadow kisses and return midnight it will be be writtin by the same author lj smith she decided to do new series because she thought since she took 17 years away from writting and that 17 years was to long to keep writting the same vampire diaries series so she thought it would be good to write a return series for vampire diaries. here's the vampire diaries web site so you can find out more about the vampire diaries series and also the return vampire diaries link hope this helps you out with what you were asking.