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[Eagle of Fire]

That's a common DOS game problem under Windows to have your mouse stupidly slow down for no reason. I know there is a fix somewhere but I don't know the name at all, sorry.

It's a common problem tough, so searching for a generic term on your favorite search engine might bring you the solution. I remember Ascendancy does the same to me under XP, but I just got used to it and scrolled about twice more than a normal game... Unless it's an RTS or an action packed game, there is usually little problem unless the scroll rate is really slow...

Some DOS programs also support an option for mouse scrolling. You might be able to fix it there.