Default Browser option within a sandbox

[sjd]

I use firefox in almost all of my sandboxes which means that firefox is installed several times because it's not installed on the host side - I use ie for general surfing. With this setup, I can't right mouse click on a sandbox and select "Run Sandboxed" --> "Run Web Browser" because Sandboxie will run IE even though I have FF set as default browser. It appears that Sandboxie obtains its information from outside of the sandbox. So if this is correct, is there any code, template or setting I can create to let Sandboxie know that I prefer FF for that particular sandbox? Right now the only options that I'm aware of, is to create 23 shortcuts to the desktop or use "Explore Contents" from the context menu and tunnel my way down to the firefox.exe file for each sandbox I want to run at any given time. Is there a better way to do this?