Welcome to the forum for Stat-JR users. Feel free to post your question about Stat-JR here. The Centre for Multilevel Modelling take no responsibility for the accuracy of these posts, we are unable to monitor them closely. Do go ahead and post your question and thank you in advance if you find the time to post any answers!
We will add further support to the Stat-JR website, such as FAQs and tutorials, as soon as it is available; the Stat-JR website can be found here: http://www.bristol.ac.uk/cmm/software/statjr/
Actually, Stat-JR is not officially supported on Linux or Mac machines. I think you can use compatibility layers or software such as Wine (for Linux) or CrossOver (for Mac) that can provide a compatibility layer to run some Windows applications on non-Windows systems.