I finally managed to reinstall both RMXP and RMVX, but only after majorly overhauling the registry, which had become corrupted after that malware episode. That’s the good news!
Bad news is that some of files of The Gladiator Project became corrupted and the backup is on the other computer, which is in storage. Maybe it isn’t such bad news, since at least there is a backup. Personal experience is a very good teacher!
I will be posting a few more substantial updates and tutorials within the next few days.