Registry clean error, Help!! I PC going mad...

Hi, I used a Registry clearner yesterday, made a big mistake, deleted all important registry keys. Now my computer totally out of control, I lost all important registry keys, such as even help and support couldn't run, I want to use system restore, doesn't work any more, DVD, all internet connection are gone. What I should do!! Please help, urgent!!!(((:throw:

Hi welcome to THF

have you got the original XP disc?

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