No.
The VL250 does not have a fuel guage. You can use the trip meter to judge how long before you need to fill the tank.
No, the oil pump will fill it up in a second or two when you start the engine. But if the filter is mounted vertically is sure will not hurt to fill it up before you install it. Know that you must apply a thin layer of oil to the filter gasket before installing it.
Fuel gauge tells you when to fill up.
Before installing an operating system, you need to consider how big you hard drive is. You also need to consider what types of programs you will be using.
Not usually.
does not need to be removed
No, it should be internally lubricated so there is no need to lubricate the starter.
Don't HAVE to, but it is a good idea.
if you mean expansion packs yes
You need to drop the fuel tank. Also you need to remove the hoses that go from the fill port to the tank.
umm..i don't think you will need to install sims 2 before installign sims 3.
Yes, most definitely.