Informix install on Solaris(unix) system help

Hi,

I have been given the task of installing Informix 10.00 FC5 on a Sunfire V100 running Solaris 10. The plan is to restore the last Informix backup from tape and test it on the V100 which is in our test/devel environment.
I have never worked with Informix and Solaris admin is still pretty new to me. I have read some documentation on installing Informix on a Unix system and see that you need to set up Unix configuration parameters and environmental variables. This is still not very clear for me.

Has anyone had any experience of installing Informix on Solaris?
Any information on this would be greatly appreciated.
For now I would really like to prepare the system to enable me to install informix.