We have a client that has a old DELL computer that is running Windows NT 4.0 with service Pack 6 installed. They Have Backoffice Small Business Server 4.5 installed. and this server is running

Primary Domain Controller
Exchange 5.5 SP3
Peachtree Complete Accounting 2002
internet sharing (I Think it is part of the Backoffice)
and File storage.

They are looking at getting a new system now and now I must figure out what would be the best route for them transferring all the information that is on the current system to a new system. they would like to stay with the current version of windows that they have now, but if they have to they will upgrade to a newer version of windows.

It has been recommended to use norton ghost to do the data tranfer. This sounds like a good idea but I am unsure how much reconfiguring I will have to do.

Any Ideas or Site links will be very helpful. Thanks