It is strongly recommended that you avoid downloading files titled from unofficial third-party sites, as these often contain malware or unwanted software. Instead, you can download the official, secure version of SolSuite directly from the developer's website. Official Download Information

Official versions allow you to easily check for updates and access graphics packs for new card sets and backgrounds.

If you've already downloaded a suspicious file, it's best to delete it and run a full system scan using your antivirus software. Graphics Pack - SolSuite Solitaire