
put the DYOM file in 

  Documents>GTA San Andreas User Files

To play this mission you must download Dyom

https://www.gtagarage.com/mods/show.php?id=5038

  Documents>GTA San Andreas User Files

and put the files there

you must download latest version of cleo

https://cleo.li

put cleo files in gta san andreas directory

Enjoy