A tech friend installed Ubuntu 10.04 on an older Dell desktop (Pentium 4); it has an odd memory/unmatched tabs pair but he installed something that compensates for that. I can use the KDE lightweight desktop but if I try to use gnome (more features) my mouse quits working. He told me not to upgrade to any higher versions since I'm a Linux newbie and 10.04 makes more sense for learning.
I have 12.04 LTS installed on another system and am more or less clueless how to identify & install packages with missing dependencies.
Anyway I have data on the 12.04 system that I want to move to the 10.04 (back-up) system, have cross-over cable installed but need to know how to create permissions on both systems so they can "see" what's on the other. Thank you in advance for any help.