How can i change and customize the special characters on my keyboard? This is my first post at AskDifferent, hopefully it works out.

My problem:


i want to insert the symbol "λ" aka 'lamda' everytime i use the Option-L key. However, by default my OS Mountain Lion inserts "¬".


My question:


How can i change this permanently and for every application i open (i.e. any browser, MS Word, Finder, etc…). I've never used "¬" but as an
engineering student i very often require "λ."


This post was very informative and in depth:

How can I expand the number of special characters I can type using my keyboard?

However i have no desire to change my overall layout – only a couple keys. It didn't really address the simple question i have.

Is there a way to do this without creating a new keyboard layout? Can i not simply change a single special character from "¬" to "λ" ?
I am currently looking at the "Ukelele" application but i don't want to be creating all sorts of new stuff.

Thank You.
Is there a way to do this without creating a new keyboard layout? 


You can do it by defining Service:


Run Automator
Choose a type for your document: Service
Check Text from Library on the left
Double click Get Specified Text
On the right check Output replaces selected text
Paste your character into text editor window of "Get Specified Text"
Run System Preferences and choose Keyboard -&gt; Keyboard Shortcuts
Choose Services
Find your brand new service and assign it a shortcut


Or with key bindings.