Calendar: MobilMe vs. iPhone

Haven't used either that much, but by the looks of it, I won't be using them exclusively in thenear future.  Two things that are rubbing me the wrong way, can't figure out how to:

• Ssee the "todo" list from the iPhone interface.
• Add "alerts" from the MobilMe interface.  I have to go to my phone to add those.

Granted, I haven't spent a lot of time researching these issues, but I feel I shouldn't have to.  They seem pretty basic.  Either they are not there, or they weren't obvious enough for this user to find them.