A couple tricks to get you there:
Rename your existing TotalNCCCost to TotalNCCCostCalc, and create a new TotalNCCCost control. Hide the TotalNCCCost control (I normally change the background color to red, to highlight the fact that it is hidden). Then, create a Form_BeforeUpdate event:
Private Sub Form_BeforeUpdate(Cancel As Integer)
Me.TotalNCCCost = Me.TotalNCCCostCalc
I know you don't have time to work with this before you go live, but it is not a good model to have all your fields spelled out in this manner. Normally, I would recommend having a couple tables, say tblSupportPersonnel:
SptPrsDesc Text - Description of support personnel
SptPrsID Long - Foreign Key from tblSupportPersonnel
Or something like that. When you want to add a new support personnel, you would just add an entry to the tblSupportPersonnel. Unfortunately, it does take a lot more work up front, and is a bit more complicated. The benefits over time will add up, though.