I'm not using windows on my mac but I opened microsoft word on my mac and every single file type changed to have the windows symbol. Sorry if I'm not being very clear. How do I remove all this clutter?
This sounds like a cache problem - in this case, the file type icon cache. One bad entry has messed up everything. The fix is described here.
Basically, you need to find and trash some files:
"com.apple.LaunchServices.UserCache.##.csstore" in "/Library/Caches/", where ## is a number, and "com.apple.LaunchServices.plist" in "~/Library/Preferences". Reboot your Mac for the change to take effect.