How to create users who has a standalone dedicated login capability

I was hoping that I could get some advice regarding how other admins are doing this....

I would suggest you to create a new user account for operational staffs and create a new OU. put all the ops staff in that OU and if you do right click on that you will be able to see Delegate Rights. So you can customize the user rights assignment for that users. If HRadmin need a dedicated logon just give him the high privilege rights to that user alone. This is what i do and it's a hassle free way. So that anyone will not have a necessity to know the network admin password since their role is satisfied.

Win 2003 & NT domain user account login issues...

When you have two domain (2003 domain and NT domain) where trust relationship is enabled, the user created in 2003 server might not be able to login to NT domain computer. The reason could be, replication might not have happened. You can enforce the replication by issuing the following command "ntfrsutl forcerepl" regardless of the scheduled replication. Use replmon command to monitor the replication. If both of the domain in different location, you need to enable Universal Membership Cache.

How to boot your machine directly without asking for a Windows Logon Password while booting up?

Some people find it hard to enter the password at windows logon everytime you boot the machine. There are easy ways to stop it. Just go to Start > Run >> type> GPEDIT.MSC >> a Group Policy window will open as the one in the image. Just browse around what i have selected there. Click on the image to enlarge it and see the exact policy setting. Just double clickon it and select "Enable". You can boot your machine without asking for a logon password.

To remove the set to automatically lock in a particular point of time, you can go to "users and computers" right click on your username and go to user properties, and disable that option. If you are in a network it is possible only in Active Directory security policy but not in local user settings. Have fun!!