How do I adjust CF to not grab port 1099?

I have a small issue with a server running CF 7 standard running on a Windows 2003 server. We have a homemade java service that uses RMI and port 1099.  When we have our app running at the time of CF install CF sees that port 1099 is taken already and always uses a different port at server bootup. On one server the install sequence was not followed and CF was installed first. As a result every time the server boots CF grabs port 1099 and our app fails.  I can get it started again by first stopping the CF service and then starting our app.  Once our app is started I can restart CF with no issues that I can find.

Now I have tried to uninstall CF, reboot the server and install CF again with our app running but CF is still grabbing port 1099 on boot and causing our app to fail until I stop CF, start our app and then restart CF.  Is there a config file I can adjust so CF stays away from 1099?  I can't change the need for port 1099 in our other app and on my other servers which had CF installed after our app (point of sale) we do not have this issue.  Can anyone advise please?

Thanks

Scott