Thank you , that one was realy good, it worked for me, the first simple solution didnt work , but the second one from the manual was perfect.
first I deleted also things in passwd file and after that I couldent login as root the root was gone , the system keeps saying no root user, but I just put the things back in the passwd file , and left the changes of shadow file and it worked.
so now tomorow I'll change my lost password on the other mashine, this here is not that computer on wich I forgot the pass,
Thanks to you again