I've searched around for a similar topic but could not find one that already existed. I'm a novice macro recorder user, so perhaps I am looking at the wrong type of program, but I'll explain what I'm trying to do, and maybe one of you nice people can help me figure it out

I want to write a macro/script/executable, that will work on a variety of configurations on different PCs running windows that will:
- Change the screensaver to the My Pictures Slideshow
- Change the directory where the screensaver looks for pictures
- Change the default time to '1 minute'
I've been able to automate this locally on my machine, but have yet to figure out a way to send this macro/exe to someone else and have it 'voila' change all that.
Any tips/pointers?
Thanks!