Can't Change User Type

[Guest]

I set up a user with a limited account, (Windows XP) but needed to change it
to an administrator account, so I changed it in the user accounts applet.
Although the user is now listed in the Administrators group, and listed as an
Administrator under Users, the account still cannot install programs or add
printers, or open the users and passwords applet. I get errors indicating
that the user is not an administrator. I have deleted the account and
recreated it with no luck. What registry change needs to happen to allow
this?

 

[Cankat Akdemir]

Right click MY COMPUTER and select MANAGE.
From the left pane select LOCAL USERS AND GROUPS and USERS
double click on the name of the user and open the MEMBERSHIP tab
click the ADD button and add ADMINISTRATORS to the list.