I don't know much about the mail problem, but you might want to 'man xhost' which might tell you how to get multiple users using the same X server. I believe there is a better way to do it than this, but I ca't remember what it is.
As far as mount on startup goes, you want the file /etc/fstab 'man fstab' will tell you all about it, you probably want a line like # <file system> <mount point> <type> <options> <dump> <pass> /dev/hda1 /win95 vfat defaults 0 2 another useful line would be /dev/fd0 /floppy vfat noauto,user,umask=022 0 0 which allows a normal user to 'mount /floppy' and have access to /floppy. Andrew Tarr "If you're not part of the solution, you're part of the precipitate"