If you still have the Bitcoin-Qt program running, you can export the private keys from the wallet. Then once you have the private keys, you can import their values into MultiBit.
Exporting private keys from Bitcoin-Qt is not part of the user functionality. You will need to either use server mode or the Console in the Debug Window to issue API calls. Here is information about the available API calls that you can make:
https://en.bitcoin.it/wiki/Original_Bitcoin_client/API_calls_list
Thanks! Im half way there, I have my private key copied and pasted into a open office folder. Now I have to import this somehow into my multibit wallet. Im busy looking for an easy way to do this, but I cannot find one....
Busy looking for an easy way? Cannot find one? Where exactly are you looking?
A simple google search for the terms "multibit import private key" turns up the following as the top 2 links:
How to import a single private key
https://multibit.org/help_importASingleKey.html
and
Importing private keys
https://multibit.org/help_importingPrivateKeys.html