Windows XP Prof on a NT 4.0 network

We have a NT network and run about 30 Windows 2000 SP2 clients and 10 Windows 98 clients. We are on a network with 5 NT servers and 5 Quantum Snap servers. Question I’m thinking of bringing in a Windows XP Prof. client on my next workstation purchase. We are a Civil engineering firm that use highend workstations and severl CAD applications which all are certified to run on XP. Any suggestions that I should look out for when adding a Windows XP client to my Domain ?