[size= 3]A small REG file that you can edit to change the morrowinds resolution. By default its 1080P and Fullscreen with this registry file.

morrowind uses HEX for its data to know the screen width and height so you are gonna need to use a converter online or the windows calculator set in programmer mode (Windows 7 or later) to convert the decimal numbers to HEX.

for the fullscreen setting you can use "00" as no or "01" as yes
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[CONVERTING DECIMAL INTO HEX USING WINDOWS CALCULATOR]
NOTE: *This method can only be done on Windows 7 or later*

now all you have to do is replace the number after
"Screen Width"=dword: CONVERTED NUMBER HERE
or
"Screen Height"=dword: CONVERTED NUMBER HERE