I have install informix sdk on AIX. After the installation i found that it did not create the CLI directory. The old pSeries machine i have the following directory structure /usr/informix/lib, /usr/informix/cli, and so on but like i said there is no CLI directory at this installation, the client version is 2.81.UC2
Excuse me, if you install Client-SDK on Windows you must run and define on Windows Start -> Execute -> setnet32 and define environment.
You must added in file \winnt\system32\drivers\etc\services the port number.