If you are looking for free or low-cost video editing software, it is best to use modern alternatives that work on current computers: Corel VideoStudio The modern successor to Ulead VideoStudio. DaVinci Resolve: A free, professional-grade editor. Shotcut or OpenShot: Open-source, free video editors.
Instead of risking system security for obsolete software, you can use powerful, completely free, and secure modern video editors that far outperform Ulead VideoStudio 8.