Not sure if this can be done but thought would see if anyone has a method. Basically want I want to do is backup a few particular folders on my iMac to an external HDD periodically, and automatically. eg, iTunes Music folder copies anything new in the folder on a weekly basis. I know Time Machine does this in a way and I did have it set up, but I'd prefer it to back my files up as a normal external HDD so I can transfer the files to other computers running both OS X and Windows. If anyone can help me out here it'd be great as at the moment I just have to do the transfer manually and it's getting tedious. Thanks.