network path was not found to join the domain

hi

i have windows server 2003 enterprise edition and pc's with windows xp pro. when i join the domain then error occurs that

"The following error occurred attempting to join the domain "domain name":

The network path was not found."

i can ping easily with domain and nslookup also resolve  the dns but i can not join the domain with this error.

please provide me solution so that i can implement the project in  the enterprise.

thanks in advance