Break Up Inventory Number Into Three Parts

I am having some difficulty with a macro. I have a column that contains a series of inventory numbers. I need to break it up into three parts and then have each part put into a new column. Here is an example of the data:

Column B = list of inv no.’s such as “ABC123.45” I need to divide it into three parts and put each part into a new column … so a new column X would get the “ABC” part, a new column Y would get the “123” section, and a new column Z would get the “45” ** ( I don’t need the decimal between 123 and 45) .