You have two problems:
1. A P150 with 32 MB of RAM. This computer is barely capable of running Windows 95. It isn't going to run something as sophisticated as Red Hat 8.0, or any other Linux program with a GUI interface. Stripped down versions of Linux or BSD would work. There is nothing wrong with these, but you will be working from the command line interface (CLI)--the Shell Prompt.
2. You configured everything for a different computer--different motherboard, different RAM and probably different PCI cards. Modern operating systems configure themselves for the computer they are installed on and must be reinstalled/reconfigured if the disk is put in another computer.