I’ve attached the file we discussed.
.rar files for GTA III are usually several hundred megabytes. If your email provider blocks the attachment due to size, you might need to upload it to a service like Google Drive or WeTransfer and send the link instead. Grand-Theft-Auto-III.rar
Open the extracted folder and look for the gta3.exe file or the Setup.exe to begin. I’ve attached the file we discussed