Corrupt XP Home account

  JIps 23:19 25 Sep 04

I tried to see if I could alter the group that an XP account was in but received a message stating that what I wanted to do was only in XP Pro. The problem is that since then I can't access the account properly. If I drop use of the welcome screen I can log in as the account but it's not listed as an account in the control panel or using "control userpasswords2" screen. As I can't list it I can't delete it, but if I try to re-create it the message says that it already exists. If I log in as the account then it shows as a guest type account and there's little I can do.
Any ideas on how I sort this out please ?

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