[ANTRIX] Host.File Problem/Logging relooping

Ok I get a problem everytime I try and save my Host.file.
Cannot create C:/windows/system32/driver/etc/host file.
Make sure the path and the file name are correct.

But I dont get it I save it where I am sopose too.

Another problem is my Logon screen I can log in but I get to the realm and it keeps relooping. I know a lot of people have this problem But if I am able to save (which i need help with) to my host.file. Then maybe it can solve the problem. Any ideas On why my host.file is not saving....!
Thx.
Pb

When you are saving it, are you just hitting the X in the corner and hitting yes? That should work...

yes and That pops up! I also did the save as too!

Please can anyone help me..