Since I've seen you post in English, I'll save myself the embarrassment of trying to poorly translate myself like I have in the French forums
From what I understood you want to know how to uninstall programs.
You can open Synaptic, search for the program and uninstall it there. You can also uninstall from the terminal by using "apt-get remove [name of program]". Lastly, If you have the latest MintMenu (v3.2) you can uninstall programs by right clicking on them and clicking uninstall (not sure how reliable that is though, never did it this way).
Hope that helps.