"I'm sure the PSX ISO came in a ZIP file or RAR file. The first step is to extract it. Windows XP can extract ZIP files by default; I have directions here. To extract a RAR file you need to install RAR software; 7-Zip and ExtractNow are good free ones.PSX only supports running ISO files and BIN files! If the PSX game you downloaded came in a weird format like NRG, IMG, UIF, etc. - those are ISO
. formats exclusive to specific burning software. Google around to find what program is associated with that format, install it and burn the game to a CD. If you want my opinion, I say just forget about the obscure format and download the game from somewhere else to get it in ISO or BIN format.3. Go to File then Insert CD image. An Open window will show up. Look through your computer for your ISO (or BIN) and load it as if you were loading a ROM. Don't expect the game to load immediately; give it a minute or two."