some applications absolutely require the domain name to point to the proper name server, but how do you test this against the new host without changing the public name server?
step one: ping the new name server and get the IP number.
step two: go into the file (windows XP):
C:\WINDOWS\system32\drivers\etc\hosts file
and manually ‘point’ to the name server you wanna test with by adding a new line at the bottom:
66.226.95.89 myDomain.com ## comment this out when done!