List of Utilties Similar to Lifehacker's Texter?
You could try AutoHotkey Hotstrings.
::hi::Hello, how are you?
::imfi::I'm fine.
::cya::See ya later...
Okay I just found one that seems sufficient:
It's called PhraseExpress it's commercial (but free for personal use), it's actually a lot better than Texter as it works well on Mac and Windows 7.