Icon Prob...

I have this really odd problem... for some reason all of my .htm and .html files have the generic exe icon... no matter what program I permantelly associate with it the icon won't change. After reboots, still the same. When I double click the file, it opens in wha I associated it with, but the icon refuses to change!

Any ideas? I am trying to associate the .htm and .html files with Firefox. I had an icon problem before were all of my mp3's had the Windows Media Player icon but it always opened in Winamp... but it sudnelly it changed back today.

Open up any folder
Click Tools ~ folder options
Go onto File Types
Find the Extention you want Advanced ~ Change Icon

When I try that, all I get is "Windows cannot find the file C:\Progra~1/Mozill~1/Firefox.exe"
Dunno why it can't find it
So I go and browse around, find the firefox.exe and it gives me 3 icon options. I choose any of them and then it just goes back to having the blank exe icon.