Cannot show messages in single folder -- they are seperated into accounts and number of new email is highlighted.
Can Alert you on the screen to appointment.
Can set appointment on the device without syncing.
Cannot as far as I know turn off then awaken for alarm.
IM in the background will be running a little differently but by Sept. Apple has promised to have this function working. So no for now but coming.
Apple has 3rd party apps for IM as of now and MSN is included as well as all the others on those apps.
"A computer lets you make more mistakes faster than any invention in human history - with the possible exceptions of handguns and tequila." - unknown