you need to mount your drive read/write. When you first boot into single user mode, it is mounted as read only, which is why you can do the file system check above, even though that is your boot disk.
mount -uw /
Run Systemstarter and then get list of users from NetInfo.
/sbin/SystemStarter
niutil -list . /users
Choose your username from the list you got above, and plug it in below where I have the word username.
passwd username
You will be asked to enter a new password twice.
Reboot your computer.
shutdown -r now