Can Spectrum run on a separate server from the one hosting Openfire?

Hi all,

So I'm running Openfire on a Windows machine (in production it will be a Solaris 10 box).  I was wondering if it is possible to run Spectrum on a linux server and have Openfire on our Solaris server.  I've been having some issues getting the two to communicate.  The error I get is "unable to register with gateway" when I try to sign in on my aol account in Spark.  I saw on stackoverflow that Spectrum IM and Openfire have to run on the same server.  Is there a way to hack the config file to get them to cooperate?

Thanks