Hey guys, I need to format my HD but I don't want to start BGII from the beggining. Which archieves Do I need to save in my zip drive to re-instal the game and continue to play. Is the folder "cache" important is this situation? Thanks for helping.

Hi there, only include the savegames folders and the overides if you downloaded any extras..
Cache is precached maps, you don´t need thoose.

Don't forget about the folders "characters" and "portraits" too, in case you have some custom characters and such.