Unzip files into any folder. Splatter Mario does not need to use the registry or alter your computer's current configuration.
Windows XP, Direct X 7
Microsoft has discontinued support for VB6 + DirectX7 apps in newer versions of Windows. Splatter Mario will probably NOT work in anything newer than Windows XP.
If for some strange reason you are totally determined to get it to work, you may need MSVBVM60.DLL and/or DX7VB.DLL, available here: dlls.zip
You can "install" them by just putting them in the Splatter Mario folder.
You may need to register DX7VB.DLL by running this command: RegSvr32.exe dx7vb.dll