Using Delphi 5 is great because of the single EXE build capability, however I always have to install the Oracle SQL*Net client on each machine and set up a TNSNAMES.ORA file with the IP address of the Oracle server. Does anyone have any idea what the actual required files are for deployment? Just the OCI.DLL? If I can find this out, I'll probably build a self-extracting installer that will put the files into the right directories as needed.