Windows XP comes with two types of user accounts; normal user and the administrator. Changing a limited user to an administrator needs the administrator account password and then selecting the option from the User Control Panel.
Windows XP will not change an administrator account to limited if it is the only administrator account on the system (other than the account named Administrator).
You have to be an administrator to change you're (and other peoples) account types.
You will have to log in with administrator account and change the privileges to admin for that required account.
This is the beauty of a file system called NTFS. NTFS is based on security, and is on any Windows computer from Windows 2000 to now. This makes things such as trying to change the administrator's password from a standard account not possible. NTFS additionally adds file protection - your files will not be viewed from a standard account if set to as an administrator. Your answer in short is no. There is no way to change the administrator password with a standard account.
assuming that you are working from a computer with windows as the operating system: click on start, then on control panel then on user accounts from there you can change the user accounts click on change an account then choose the account you would like to change then change my account type then you have the choice of either computer administrator or a limited account if another user is already registered as computer administrator, this could be tricky. this would then require asking them to shed their responsibilities onto you. to do this they just need to follow the same procedure as above. NOTE: only the computer administrator can change the account types!
http://www.wikihow.com/Change-a-Guest-Account-to-an-Administrator-in-Windows P.S. Be sure you've closed the remote desktop function to prevent from any unwelcommed connections using Guest Account.
Only if they have your password.
Group Policy
I believe that your question relates to how to change other user's accounts from a single account. This is possible, without hacking, by labeling the account as an "Administrator." It sounds like the account you currently have is a "Limited" account, in which you are obviously limited to some things, such as changing other users account information. An previous "Administrator" can use Control Panel to change your account status.
just build up a new account and set up the pw then restart your computer
Once they have their letter of authority, they should be able to access the account. Then they can change the account.
It is necessary for you to be the administrator of your PC or else you will not be able to install specific programs or change settings. Only create a limited account for other users who constantly change the settings of the PC