I've been trying to automate the creation of a user account with admin rights using cmd bat .

net localgroup administrators [I]account name[/I]/add

got the following error:

There is no such global user or group:[I]account name[/I]

what's the problem?

You may post solution in vbscript also(those who find batch obsolete).

Interesting. Maybe you left out the space between "name" and "/add"? Try this:

net localgroup administrators USERNAME /add

Then you probably don't have permission to do this, in which case the only other alternative would be getting permission from the current admin, or hacking into it, which I cannot help you with.