Comment 133 for bug 150930

i install ubuntu 7.10, then i update they want some (Third-party software, Authenticate) GPG key same time i want (Java Runtime Environment-6) JRE 6. how to install JRE 6. now i try shutdown my system it will be log and come to user name & Pass word ask (both shutdown and logoff all the time) then i directly switch off my system now i restart the ubuntu 7.10 it will not enter to normal and recovery, what can i do, i want JRE install and reset my ubuntu