The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.
One of a set of tools we're offering as a way of saying thank you for being a part of the community.
http://blogs.office.com/b/microsoft-outlook/archive/2009/08/25/multiple-exchange-accounts-in-outlook-2010.aspx
This is the only way that you can have reminders pop up for another account than yours