SL 2011 FP1 Customization - Accessing to List items

Hello:

I have a question on List property on a field.

Let's say we have a field_X and set List property with values:

Data Value Description Caption
----------------------------------------
value1 Description1
value2 Description2
value3 Description3

Is there any way in VBA code to access to the each list item value? An example could be:

If a grid value matches to a value in the list values set in firld_x, do .....

Above is just an example, what I want to know is if there is a way to address the each item of the list in VBA code.

Thanks for your help!