Hi Before I buy Acronis TI, I would like to know two things about it. First, If I make a full hard drive image to dvd's, with 15GB's of data on my hard drive, how many drd-r's and dvd-rw will it take? I read TI compresses the data that's why I'm asking. Second, If my computer (a single home computer) has two internal hard drives, with two seperate OS's on each, will Acronis TI protect both? Thanx.