How do I change a forgotten root password

[Søren Neigaard <s neigaard mobilethink dk>]

I have a customer who has forgotten he's root password. How do I change the
root password to something known?

Med venlig hilsen/Best regards
Søren Neigaard
System Architect
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Mobilethink A/S
Arosgaarden
Åboulevarden 23, 4.sal
DK - 8000 Århus C
Telefon: +45 86207800
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Email: s neigaard mobilethink dk
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