Groupwise and MS Server 2008

I have inherited an environment that I am in the process of analyzing. Novel GroupWise running on NT 4.0 (I know, I know where have these people been for the past 10 years?) Anyway, I would like to migrate to MS Server 2008, but I don’t know if GroupWise will run on Server 2008. Any suggestions and/or feedbacks will be highly appreciated.