Deleting Expose & Spaces OK?

i'm very anal about disk space and lack thereof.

i was hesitant to delete expose and spaces, but i figured since i never use them, why have them? i also deleted iDVD and iWeb. i guess i was just concerned about the computer needing any of these pre-loaded apps.

has anyone done the same? is this okay? i'm kinda nervous. (my macbook that i've had since december has already crashed and i just don't want to face losing everything again).

thanks,
shandi

Expose and Spaces are part of the user interface, I don't think they can be removed

i'm pretty sure expose and spaces use minimal disk space.

what about the expose.app file in /applications?