I downloaded two programs (Paraview and gmsh) and am trying to install them manually since the vesions in the repositories for Ubuntu 12.04 are outdated. I have estracted the folders to Desktop. In each program's folder there are several subfolders but no installation instructions, ./configure, or makefile. In /bin there is an executable to run each program directly from the folder. I would like to install them so I can run them from the application menu or the command line though. How to I do this and where should I installl them to? Thanks in advance forthe help.