unzip the file and put the CHT/ folder into the OPL File structure (hdd0:/$OPL_PARTITION/ for HDD or device root for any other device)
See available cheats table here
So you have some sexy component cables on your big widescreen TV and you think you are ballin' hard? Well sorry to break it to you but you aren't. Most games do not have widescreen support or a bad implementation of it (example: GTA - San Andreas)
These cheats will give you the best experience!
Just make sure you go to Cheat Settings on OPL and change Enable PS2RD Cheat Engine to On and change PS2RD Cheat Engine Mode to Auto-select cheats.
to avoid the hassle of manually picking wich games have widescreen cheats available, enable the cheats globally and paste the whole package, so if a cheat is available, it's automatically loaded.
I am converting most of them from the .pnach files from this Widescreen patch archive:
https://forums.pcsx2.net/Thread-PCSX2-Widescreen-Game-Patches
Example:
this is the list of cheats that need testing and a mastercode