Follow
this link to get the advancemap program and the firered emulator that will work with it.
Extract it, and run AdvanceMap.exe
Then Open Rom, and find the FireRed Rom in the other folder.
On the left column, youll see an option called "Open from Header" (or something with Header)-double click to open that.
Double click each folder to see the contents, and just keep double clicking until you find the spot you need.
Works on my Laptop, Windows 7.
If you need a version that is working on OSX 10.7.5 (should work on newer version too) use
this link