As I understand it the resistance itself doesn't matter, it's the voltage on wires A+D when B+G are connected to ground and C+H are connected to 5v. We're actually kindof lucky that the 2.4 throttle body's output varies more when it is opened, so by adding extra resistance we can make it vary less.
On the graph there are 4 solid lines, but the 2.2 and 2.4Fix pairs pretty much overlap when you put the resistances in that are in the boxes. I reckon you might need resistors on all 4 wires (roughly at what i've put in the boxes)... Unfortunately resistors don't come in all those values, so if you type in the resistor values you have (it's all in kOhms) and play around to see if you can get the lines to pretty much match with the resistors you have.
Otherwise I think it's a matter of buying 4x 1k pots, wiring them in and setting them to the values in the spreadsheet using a meter across them to check (with the TB disconnected). I'd have a play with the numbers some more too. I only spent a few minutes trying different numbers, so you could get the lines to match even better with some time.
Excel has some magic solver thing that'll fiddle with values until everything matches. If you point it at the 2.2 and 2.4 fix columns and tell it to alter the 4 resistor values on the top-right then you could find the exact ones. OpenOffice only seems to solve for one cell though, so I can't do that here... You can always do it with maths, but playing with the numbers is more fun madpc..