Using Lutos Notes 8.5 Problem

Hello everyone…
Can you please help me with my problem…
I am using Lotus “Notes 8.5”, not because I want to, but I have to.
I see that whenever I attached a file, by default it zips the file.
So every time I have to “un-check” the zip attachment dialogue box.
What i want to do is that make it default not to press the "un-check" box every time i used it…
Is the zip check box can remains unchecked by default? For Preferences I don't see anything.
Thanks in advance and more power….
