Excel 2003 :: Extracting Sub Sheet Of Data From Larger Schedule

I have sheet containing a schedule of data. It is a record of changes on a project, each change is sequentially numbered and contains a row of data (date of change, whether approved, cost of change etc). Each change is given a cost centre reference (1 of 10 cost centres are being used) depending on the type of change being made.

I need to keep that record of the overall schedule of changes but I also want to extract each of the cost centre categories into a sub table on the sheet to give a schedule of changes against each category.

I have almost achieved what I want but one method leaves blanks in the sub table which I want to avoid and the other method I used to remove the blank lines but needs the first method sheet calculated before it then goes to work and seems rather cumbersome and I suspect there is a much easier method. (I also want it to be compatible with excel 2003 so it can be used across several platforms.)