Installing Informix NT

I am trying to install Informix on NT 4.0 I have both NT Server and NT Workstation I have both Informix 7.20 and Informix 7.22 Here is what happens. Informix 7.20 on both NT Workstation and Server I click on setup.exe on the CD and NOTHING happens. I never get any programs to run. Informix 7.22 on both NT Workstation and Server I run setup.exe. In the setup program I have tried BOTH install custom only (picking OWS) and INFORMIX ONLY. The install simply creates a directory called c:\\informix and only puts the release notes in the directory. Nothing else gets installed for OWS. The Install starts and finishes immediately never asking me for a serial number, etc... The machine. The machine is a Pentium with 32 meg of memory and NO other software installed on the machine. The machine has no special hardware except for the IDE 2 GHig hard drive and a CD Rom. Any ideas? Has anyone else seen this? Am I missing something? Thanks! Stuart slitel@netcom.com