notification

...the taskbar? Randomly, my battery notification disappeared on my notebook! After going into properties --> notification area --> system icons, the power is gray and unchecked. The battery or power is not listed in the list of notifications either -- it's simply gone. How do I get it back?

...my iPhone? I can't seem to get a working push email on my iPhone using a yahoo email and I'm wondering if it is because I need to upgrade to Yahoo Mail Plus.

I have gone through the instructional cd, and gone through the phone menus and cannot figure out how to set a particular media tune for all my incoming text messages. Best answer goes to whoever can explain this to me in plain english.

I have the blackberry curve with the facebook application and for some reason i dont receive message, comment, etc. notifications.. i can upload pics,send messages but i dont recieve any

If the "out of holster" setting is set at "none", but I have the repeat notification set as LED flashing, will it still flash? Is there any way to get the phone to be completely silent EXCEPT for LED notifications?