First time here, seems nice so i'll ask my question.
Welcome
However the computer has a hostname and a computer name but no user name. with the computer_name i use the name of computer (obviously) but with the account name i'm a bit confused.
you are probably confused about the terminology
a hostname is the computer name if you want to make it simple. you can find it out by typing "hostname" in cmd
users are in the control panel - user accounts windows, or to make it better and more useful - rightclick "my computer", choose "manage" and go into the users and groups. everything is pretty simple there
if you are in a domain with a domain controller, the usernames are there.
I'm assuming its the user name. But what if the pc i'm trying to access has not network username? Do i use the network username or the username of their Windows XP on the pc?
no such thing as network username. only local users and domain users if you are on a domain.
Oh and what if it doesn't have a Comp Name? What do i input then?
cmd - hostname will give you the answer
what you do, assuming the computer is called "Some-PC" and there is a user there called "User1" who is in the local administrator group is:
net use z: \\some-pc\$ipc /u:"some-pc\user1"
or even better - don't use /u:, the command will ask you for username and password
BTW make sure there IS A PASSWORD. empty passwords are troublesome