At the current moment The LAN is running is mixed mode 1 Nt file Server, 1 Win2k exchange 5.5 server, 1 Win2k Domain Controller with AD, and 1 win2k Web server with SQL 7.0. At the moment doing alittle bit of research on if to upgrade or just rebuild the entire LAN? The new software would be all Win2k3 OS, exchange 2k3, SQL 2k sp3. Should I upgrade or just rebuild and copy the appropriate information to the new build?