I've done a really clever thing!
To cut a long story short, I over-wrote my main PC's domain account on my home network. :oops:
Therefore I can't authenticate against the domain, and I disabled the local administrator account!
As it's a home machine on my test network, there is stuff on the hard drive, like my video collection and some of my experimental projects which I didn't put on the server, which I would rather not lose, so reimaging isn't really an option.
What I need to do is login to the machine with administrator priveleges and rejoin the domain (to sort it out!).
Also, the only machine capable of running my CD burner is the machine I'm locked out of, as all the other machines are quite old (the server has a 266MHz CPU, and the machine I'm on at the moment has a 500MHz cpu, both have minimal RAM).
So after my ramble - how can I break back into my PC without a boot CD, or using a floppy, as the machine doesn't have a floppy drive. I could use my memory stick if absolutely necessary to reset the password?