HELP!!! I need to add a computer back in to my active directory

Hi All,
Over the summer we changed our network and I have just coked up our truancy call machine.

I changed it's name and now when I rebotted it, it is not part of my new active directory. So it won't log on to the new domain BUT also I don't know the local admin password to get back on to the machine.

Is it possible to add the machine back in to active directory as I have tried just adding it but it still doesn't log on.

thanks

Download UBCD or similar and reset the local admin password then you can drop it back into the domain.

jcollings beat me to it... bloody live topic!