Question : Effective Policy Settings???

I've been having issues connecting a specific machine on our network, and giving access to the machine to everyone.   This one machine is the only one on the network that can't be accessed.  Although, it can be seen through the Windows Network, and on our Domain Controller.  I can ping it, and get a response. I've localized the problem to be in the Local Security Settings.

Using "secpol.msc" to access the Local Security Settings, and under the User Rights Assignment Policy, the first Option is  "Access this computer from the network."  

I've tried everything from Authenticated Users\ Administrators\ Service \ and Everyone for the setting, but it only applies to the Local Policy Setting.  Is there a way I can change the "Effective Policy Setting"?  I've noticed on the other machines that this option un Effective Settings is checked for Everyone, But it is grayed out on the machine we can't reach.

How would I go about setting the Effective Policy Setting to Everyone, so that this machine can be accessed on the Network?

Also, the error message that I get when I try to connect to this machine from another is:  "Logon Failure: The user has not been given the requested logon type for this computer."  

Any help would be greatly appreciated.

Aaron Ditto

Answer : Effective Policy Settings???

I seem to have been the only one to even atempt giving a solution .... though we'll never know if it was the solution @ all ( unless AaronDitto wakes up )