Setting the default value of a Lookup type column

[jembogey]

Hi, I've created a Lookup column for a particular list. This column references the UserInformation list to display the list of Users a user can choose from when filling up this particular Lookup column.

Normally, when a user creates a New Item, my Lookup column will always display the first item inside the UserInformation list. HOWEVER, what I want to happen is the Lookup column should be defaulted to the corresponding name inside UserInformation list to the user who logged-in.

I think this is possible since sharepoint knows who logged-in and saves this value in the Created By field once the user has saved his changes.

I hope someone can help me.