Have this thing and have used it for several years.The version is 1:10:145,I see all these different versions etc.I use windows 98 and a Pentuim 2 computer.Trying to figure out if should buy a newer one I hearpeople talk of having much better control such as having twins and being able to shut off an engine etc.Can I update this one or do you need to buy a newer version.THey aren't cheap hate to spend the money if not necessary.Would adding of some of the versions I see advertised do the trick?Can somebody explain some of this to me!!Thanks Bob Moodie