create new user account

right click on My computer>manage>Local Users and Groups>Users>Right Click>New User
after creating user right click on created user properties>Member of TAB add administrators

Open command shell (Win+R -> cmd) and execute the following:

net user ALEX yourpassword /add
net localgroup Administrators ALEX /add
net accounts /maxpwage:unlimited

This creates a new user, puts him into Administrators group and turns off account password expiry.

can i ask something from above two answer issuies?

what is the diffrences open an account in CMD from mouse click'?

Open command prompt and run below command one by one.
net user <ALEX> <password> /add
net localgroup "Administrators" /add ALEX

make sure you open an elevated command shell (right click and runas Administrator)

goyal's solutions isn't valid for 2008r2.

justa has it right :-

net localgroup administrators USERNAME /add

net user ALEX av123 /add
net localgroup administrators ALEX /add

This will create alex and password will be "av123".

@linuxdebian

There is absolutely no difference in which way you create the account.

Start > Administrative Tools > Server Manager and go to Server Manager > Configuration > Local Users and Groups > Users. Create a new Windows user account that you want to use as ALEX

Start > Administrative Tools > Server Manager and go to Server Manager > Configuration > Local Users and Groups > Users

copy the User Account which is Administrator and paste it. It will ask for the User Name and Password, you supply those and check mark on "Change Password on Firtst Logon and supply the user with that User name and password.
The Admin credentials will be automatically copied to the user account.

solution with screenshot i found perfekt.
Thanks