Importing files.

Just want to know, is there a way to make a file/folder/software work on both the OSs?(Import from WVista to W7)
My W7 looks rather boring, with no music or games at all :/

*EDIT* Forget about this one for now. I have a bigger issue

You can run music, pictures, movies, statistic files which not request Windows files to run. But software and games, i'm not sure, you can few games, like WoW or something, which is not installed in operating system, it's just on disc and you can easy transfer it.