We have screen OS 6.1.0 on our isg 2000 firewalls. We wish to use nsmexpress security management. The nsmexpress OS version is 2007.1( I am not sure though, this applicance was bought back in Qtr 1 2008). I had heared that it may not support the deployed ScreenOS (6.1.0). Please advise me of the alternative.