Windows 7 - Network Password Prompt

Recently we migrated a whole bunch of our network user's to Windows 7. I've found that now they are not being prompted to change their network password like before. Before on Windows XP they were notified of the days remaining until the password expired. Now they're not. Would that have anything to do with me Enabling the "Interactive logon: Do not require CTRL+ALT+DEL" in the local security policy? It's not something that HAS to be enabled it was just so our user's didn't have to choose which account to sign in with. (Our users don't like change). If it's affecting the prompts for the notice of passwords about to expire I'd rather leave it disabled.