Problem mounting external disks

I have been using Trinity 3.5.13.2 with plenty of satisfaction under Kubuntu Ocelot. I made a clean install of Precise Pangolin using the Trinity live cd (3.5.13.2) on a newly acquired used AMD computer and have managed to get it working fine except for few fine points I cannot figure out how to do. For example, 1) Under Ocelot, I used to be able to plug in a usb stick and immediately get an icon of it on my desktop with a recognizable name (like "Lexar" ) with a dropdown menu allowing me to mount it. It would then be mounted on /media/Lexar which I found very convenient and I could then see it fine in my Konqueror file manager. Ditto for cdroms. There were also no special entries in my fstab file referring to usb or cdrom devices. So how do I get this going on my new Precise installation? 2) Under Ocelot, in Konqueror, from a dropdown list in VIEW, I could choose see files graphically according to the space they all took on my hard drive (called something like "File size viewer"). This particular option is not in the droplist of my new installation. Konqueror version is " 3.5.10 using Trinity 3.5.13.2". How do I add it back in? If I could get a couple of pointers, life would be easier. Thanks in advance. Marc