i have a 60gb freecom drive and i would like to use it on a Mac and my PC. i used to be able to do this but i had to reformat my hdd due to many problems. and now i can only use it on my PC. the format is NTFS. what format can i use for Mac and Pc? is it Fat32 or Fat? and if so i dont have them options when i go to format. thanks! 