not working for me
it don't ask me for wallet name, "failed to parse arguments: the option - -login is requiered but missing"
If you run simplewallet.exe it will ask you to enter a wallet name, if the wallet dose not exist or the the name you enter is new, it will ask you to create a new password.
Next time you run simplewallet.exe you will need to enter the wallet and password you created.
It seems you did not enter a new wallet name, but hard for me to know from what you have said, if you can give more info on the error, I will try to help