I would check the firewall first. If this is not issue, check the permission. this link may help,
Vista Permission IssuesPost Posted: Fri Mar 02, 2007 5:14 am Post subject: How to: check permissions using Vista icacls command, Reply with quote . ...
http://www.chicagotech.net/vista/vistapermission.htm
Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on
http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on
http://www.HowToNetworking.com
Have XP pc network with laptop vista. can access pc from vista, but if i try
from pc to vista i get an access denied, contact administrator of the server
message? Any ideas much appreciated.