Wine or Cedega, which is a fork of Wine specifically focusing on DirectX applications. Check Wine's application database first, and if there's no support for what you want, check Cedega. Years ago I was a heavy EverQuest player, and got EQ running in Slackware via Cedega with better performance than Win98SE. Back then though, vanilla Wine had little support for DX, and they've come a long way. I don't do anything with most of those, but do look into Gimp as a native Photoshop replacement. Varies widely by software. Check the app databases linked above, or a search of their forums for other people's experiences. Sure. Mount it and make it available as a Samba share, then any Windows machine can access it like any other networked drive. Very functional. What would you need to use it for?