Sorry to be coming in late, but I would have solved this just using qorksheet functions, namely VLOOKUP.
Somewhere on the sheet create a table like this:
A 110 - A
B 120 - B
C 130 - C
D 140 - D
Then in a cell adjacent to the cell you wish to replace, enter a vlookup formula along the lines of:
=vlookup(A2, $G$1:$H$4, 2, false)
then if you really want, you can pastevalues the result over the original cell, if you relaly want it 'in place'
Or, you could write code to evaluate the vlookup and assign it to the cell.value.
range("a2").value = worksheetfunction.vlookup(range("a2").value, range("$G$1:$H$4"), 2, false)
oh, you would also have a check for when the value of a2 isn't in the lookup table, and to just not change the contents of the cell. So something like:
temp = worksheetfunction.vlookup(range("a2").value, range("$G$1:$H$4"), 2, false)
if not iserror(temp) then range("a2").value = temp
Cheers,
Rick
Rick 
Melbourne, Australia