USING THE SIMRACEWAY SRW-S1
Since there's no CD with the Simraceway SRW-S1 you need to download the drivers from the official SteelSeries support page.
Once you are finished installing the drivers i suggest heading over to download the Simraceway game, a 573MB file in size (recommend using a download accelerator).
The Simraceway is a free racing simulator (quite good for a free product) but the fact that you need to input your user name and password each time is very annoying. You also need a working Internet connection to run the game (it's also primarily a multiplayer title).
So far this is the only 100% compatible game with the Simraceway SRW-S1 something which is easy to see just by checking the options menu.
Like i said this is a very good game considering it's free (well not really free since you need to spend money to get more cars - luckily the included $10 card can get you some).
The digital tachometer works like a charm with the Simraceway game, unfortunately that's just about the only game these are compatible with.