I was told to just put in the disc, and go along with it, but now it gets to some"what aperature space do you want to use", or something close to that. None of the options I can choose will work, except for having two OS's, and I dont want that. Dont I need to reformat? Can anyone walk me through this. Dont I just reformat then pop in the disc? Anything important I need to know while doing this? Please, some help!