what specifically is the error?
Limited User accounts are just that, there are many things they are not
allowed access to.
Here are some articles you should read.
http://support.microsoft.com/default.aspx?scid=kb;en-us;307091&Product=winxp
http://support.microsoft.com/default.aspx?scid=kb;en-us;307066&Product=winxp
This, from the Help & Support from within XP,
Computer administrator account
The computer administrator account is intended for someone who can make
systemwide changes to the computer, install software, and access all
non-private files on the computer. Only a user with a computer administrator
account has full access to other user accounts on the computer. A user with
a computer administrator account:
a.. Can create and delete user accounts on the computer.
b.. Can change other users' account names, pictures, passwords, and
account types.
c.. Cannot change his or her own account type to limited unless there is
at least one other user with a computer administrator account. This ensures
that there is always at least one user with a computer administrator account
on the computer.
d.. Can manage his or her network passwords, create a reset password disk,
and set up his or her account to use a .NET Passport.
Limited account
The limited account is intended for someone who should be prohibited from
changing most computer settings and deleting important files. A user with a
limited account:
a.. Generally cannot install software or hardware, but can access programs
that have already been installed on the computer.
b.. Can change his or her account picture and can also create, change, or
delete his or her password.
c.. Cannot change his or her account name or account type. A user with a
computer administrator account must make these kinds of changes.
d.. Can manage his or her network passwords, create a reset password disk,
and set up his or her account to use a .NET Passport.
Note
a.. Some programs might not work properly for users with limited accounts.
If so, change the user's account type to computer administrator, either
temporarily or permanently.
Guest account
The guest account is intended for use by someone who has no user account on
the computer. There is no password for the guest account, so the user can
log on quickly to check e-mail or browse the Internet. A user logged on to
the guest account:
a.. Cannot install software or hardware, but can access applications that
have already been installed on the computer.
b.. Cannot change the guest account type.
c.. Can change the guest account picture.
Note
a.. You might see an account with the name "Owner" when you first log on.
The owner account, with computer administrator privileges, is created during
installation if no user accounts are set up at that time. You can rename
this account with a user's name.