Windows 7: Cant print. Asks for my password but states its wrong

Hello again everyone. I am having more trouble with Windows 7. I am hoping someone can help me solve this one! I have a computer in the other room that is running vista. He can connect to me and my computer sees him. THere is a laptop in the house that is also on my network. here is the problem. I CANT PRINT. This is why, when connecting to his computer its asks for my user name and password. I put in my password and it will not connect. The labtop is able to print though and with out a password at that. Can anyone explain this one for me?

Okay, this is going to sound silly, but i was able to fix the problem. When connecting the PC in the other room, for some reason my login name was wrong. Changed it back to my name and it connected