i have both and there is no conflicts between nero or windows own burning software.
you can turun it of if you really want to in:
start/control panel/performance and maintenance/administrative tools/services
scroll down to imapi cd burning com service
double click and set to disable and restart the computer
ps.if set to manual it will only start up when you want it to,set to disable and it wont run at all,auto starts up with windows
i have mine set to manual and use nero as above no problems.