NIS2009 upgrade and wired router question

I currently have NIS2007 and a Cisco WIRED router. I have never had any problems with these two getting along.

 

I am thinking about upgrading to NIS2009. Does anyone know if there might be potential problems with my wired router and the NIS2009?

 I have been hesitant and skeptical about upgrading to NIS2009.

 

you input is appreciated

 

thanks