default progs

[dzon65]

For some reason my post isn't loading.Next try.Installed lxde on a minimal.(I've tried this on several pc's).There is no way I can set default progs.Whatever file I try to open,it'll always ask me to open with....The preference tab is missing.I've downloaded a debian/lxde iso and ran it in ram and the tab was there.Do I have to install anything else to have the preference tab to appear?