Image to my question on deleting programs

I proceeded to my computer janitor and it listed the kernel generic pae 20 and it's dependencies, and I deleted that particular kernel. I will go to my synaptic manager to delete the other names kernel / programs one by one to avoid any co-dependencies which might exist. I need to do this in a step by step process. I do not want to crash my main Kernel [ pae 24 ] as this seems to be the ' kubuntu main system. The computer janitor only listed the pae 20 program as not being supported anymore, and no other programs were listed. I will update you on my progress..Thank you, John
ps: It would be so nice if Linux could make a package manager that can automatically install those .sh packages as well as the tar.bz. It is somewhat time consuming for us novice command line users to fiqure out the process or command lines to do this. Providing such a package manager, besides ' Gedit ' would steer more computer OS purchases to Linux for personal use...just a crazy suggestion.