Can U Try This!!!!
U Maybe Interested In Trying This Out....
1) linux init=/bin/sh.......this will give u a shell prompt
2)you'll have to remount the root filesystem
3)After single-user mode, it's cleaner to reboot rather than to press ^D to do the multiuser boot, because the init "runlevel" mechanism is messy yaar.
4)you can edit (/etc/passwd or /etc/shadow as appropriate), or you can change the password without supplying the old one as root by typing "passwd root".
All Said n Done...ur Up with ur New Password..