These are only the files that Resource Hacker found inside WoW.exe if you wanted something else, sorry but I didn't find it.
For the .res files I recommend getting out your favorite hex editor. For the .bin files at the bottom of the `WoW.exe Files` folder just use a good text editor.
The `Cursor 1.cur` file doesn't work atm, it's just blank. I included .res files for each of the XML-like data files, some icons, the bitmap, and the cursor and icon groups.
As far as I know the client will not have issues if you modify it.(Checked actually. I edited the comment.)
The .txt version of some XML resources may not be the same as the .res versions due to the fact that I drained the null chars(00) out of them to make them easier to read.
Resource Hacker:
(Dead)(Closed-Source) ResHacker
(New)(Open-Source)XN ResHacker
3.3.3a WoW.exe Resources:
MegaUpload - No Binary
MediaFire - No Binary
Virus Total