how do I use this 4 pc cleamup

But often if you launch the application, it does what it's meant to do.

Typically if it's a Windows application you click twice in quick succession on the little graphic image on the Windows desktop.

I would suggest selecting a Application that suits your Platform installing it and updating as required then running it.

Generally when someone asks a question they want to know something but they also tell us what it is that they want to know. ;)

Col