what's up... could be dumb question but I really need to know...
my friend got into car accident. he drives accord 02 dx..

now he doesn't have hup caps for his wheels and Im trying to surprise him by buying new one... Im thinking to put it on for him middle of night.

do I need to unscrew all his wheels to put them on? no right?
I drive accord 02 EX and I have a key lock...

and I believe DX don't have such thing like that...

or can I just buy hup caps and just push it in the wheels?? and it's done?
sorry I never had hup caps so I woudn't know. thx for reading