Recently a new folder appeared on my husband's desktop. The folder is named Transforms and it has a number of files in it, all with .mst extensions. A Google search told me these have something to do with Windows installer. I can't remember the last time he installed a program (at least that I'm aware of!) so why would this suddenly appear? He's a neat freak who wants to get rid of anything he isn't using. It it safe to delete this folder? What's the worst-case scenario?

Thanks for your help.