Yeah, me too 
It looks like it will have to call a function on another server to send the fax email via .NET and MAPI API calls on a Windows box (wM is running on Sun). After looking more into the MSMQ solution it just doesn’t seem like a good idea. Much easier to invoke a webservice and have it send the fax. Since the project includes the use of a .NET server, it won’t require a special nook on a machine somewhere at least.
Kind of defeats the purpose of an integration system but oh well…
Thanks for your interest… if I remember I’ll update this thread with the final solution when it’s done.