Instead of changing my host file i'd like firefox to think my domain is on my own server while my other browser to use the real ip address. I use to edit my host files but that forces both browsers to change the ip address.

I found change hostbut it doesnt appear to use the alternative host file. I also saw a comment asking when it will work on firefox 6+

I tried Host Admin and it fails. It works but the alternative IP address must be in your host file already (which i dont want) and it lets you deselect a domain so the host file is ignored. Not what i want.