If so, may I ask how?
yes
put corona as default renderer
use corona material converter ( see goodies scetion ) to convert all materials into corona
save it 
and run it everytime instead of your main max shortcut LOL
OR
[font=arial, helvetica, geneva, sans-serif]there is a workaround using a script and changing the defaults settings but the above one is quite convenient [/font]
[font=arial, helvetica, geneva, sans-serif][/font]
[font=arial, helvetica, geneva, sans-serif]if you still need that see the link below 
[/font]
http://www.ruffstuffcg.com/journal/customizing-3ds-max-start-up-settings.html