when vista access xp, it required the password

hello there,

I am having problem with my vista. The problem is i have one pc with windows xp professional edition and i did the sharing file and printer as well. Then i used my laptop with xp professional, i can access the file without any problem. I have another laptop with windows vista and i try to access to PC but it required the username and passsword? Before this happened, my laptop with windows vista can access the PC xp professional. Then recent 2-3 days, when access the PC windows xp professional, it required password. Anyone can help me?

USe Remote Office Manager for Remote Access to your files.
Enter Administrator User Name and Password for access to files.