I am trying to add smb users using the command "smbpasswd -a admintmp580" as root and I am getting this error:

New SMB password:
Retype new SMB password:
Failed to initialise SAM_ACCOUNT for user admintmp580.
Failed to modify password entry for user admintmp580

I would like for different users to be able to access different folders on my computer through a network.

which account are you using to do this?

I'm not sure, what you mean by "which account are you using to do this?" I am running this command at root as I said in my first post, if that is what you mean. I think I may have figured out what is causing the error. After I made admintmp580 a unix user for this computer with the command useradd admintmp580, I was able to run the command smbpasswd -a admintmp580. Is it required to create a unix user before you create the smbuser(sorry if I am not wording this very well)? I don't really care if the user can sit at my computer and log in, I just want them to be able to log into the shared folders through the network. I want to create different users so that I can allow different amounts of access to my computer.

Yes, you must create a unix user, or there must be a unix-level user created. Typically this can be done with some scripts that automatically create the user.

It's a unix file system, not Windows. Therefore, something must be in place at the unix level that authorizes the Samba user to use the file system.

www.samba.org - there is TOSHARG, and Samba 3 By Example, which provides step by step examples to configure Samba. Take a look, you'll find about everything you need.

Thanks for the help.