being totally new to Mac, I don't know a thing about the software out there and even when looking at the threads here, there are still lots of choices. On my PC, I was hesitant to install a program because I always thought I was cluttering up my machine. Do I need to worry about this with my Mac? I mean, if I try a couple, can I uninstall the one I don't want (ftp clients, for example)? If I do, is it clean or does it leave some residual stuff I don't want? Thanks!