anybody know the technical shiz of it all?

sooo... if i switch my template, am i gonna lose all this quality bloggage? ie my entries shall all be deleted if i want new colors? i see that the ev monster has a new template, & none of the old jazz is there, but i'm not sure if that is by choice or not.
i know that i can change my current one, but as for the big switch? i gotta tell ya kids, i'm weary. ha, i know how much these ramblings mean to u on those late nights with nothing to do!
if u know the answer to this- plz drop a comment & let the shakin' it fast communinity know.
thank you,
the management

ps ev is not actually a monster