Windoze 7 may not like the post box...............
Someone is giving you a line of bull. The steering gearbox has nothing to do with alignment, which is all about the upper and lower control arms, tie rod ends, and drag link. The Pitman Arm connects the drag link to the gear box. If the gear box is worn, your steering will not be precise and you can be all over the road, but once it is pointing straight ahead (at rest in the shop), everything else can be aligned to be within spec.Your observation of the car's handling, while driving, will be poor with a bad gear box, but that has nothing to do with alignment issues.