Hi Al,
It's not advertised, but the MS website says the Local Users and Groups is not included in the Home Premium edition.
To confirm in the run line type "lusrmgr.msc" and if no snap-in appears, it's not there.
Here is an option listed on the following webpage regarding removing the password aging in Win-7 Home Premium. I have never tried it but it's something to consider. http://breztech.wordpress.com/2009/07/15/howto-turn-off-password-expiration-in-windows-7/
In Windows 7 Home Premium:
1.Run Command Prompt as Administrator (Rt-click cmd program to Run as Administrator)
2.Type the following, then press enter net accounts /maxpwage:unlimited
3.Logoff and restart the PC, Your done.
The only other option is, if your computer is at home, secure, you could remove the password so it didn't ask for one.