"The command prompt has been disabled by your administrator"

"The command prompt has been disabled by your administrator"

Method 1:

Edit the registry directly
Open Registry Editor (Regedit.exe) and navigate to:
[HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\System]
In the right-pane, double-click Disable CMD and set it's data to 0

Method 2:

Using Group Policy Editor in Windows XP Professional.
Click Start, Run, type gpedit.msc and click OK.
Navigate to User Configuration \ Administrative Templates \ System
Double-click the Prevent access to the command prompt

You can then disable or set the policy to Not Configured. Disabling or setting this policy to Not Configured should solve the problem.