I use my instant messenger all the time, but when i leave the house im cut off... is there a place i can get a mobile messenger app for my 8100? and how can i install it on my blackberry?
if it's BBM, make sure your phone is updated to the latest OS, then install the newest version of BBM.
If it's an IM service (gchat, yahoo, etc) try obtaining Instango. It keeps all of your IM contacts in one place (read: Trillian or Pengin on the computer, only for Blackberry). It usually keeps a connection pretty well.