Devise Drivers (DriverSmith, DriverFinder Mac versions?)

I am trying to figure out whether some apps that appear to be Windows apps will work on my iMac. Specifically an app called DriverSmith, which I did not buy but somehow appeared on my Mac. I found a review of DriverSmith that suggested DriverFinder is a better app and finds many more outdated device drivers. Apps I did not buy or intentionally download suddeenly appearing on my Mac scare me. Searching through Google does seem to reveal that this is a "legit" company selling a fairly popular application.

History

I am running a iMac 2.66 GHz Intel Core i5 (8 GB 1067 MHz DDR3). It has a ATI Radeon HD 4850 video card. I was trying to play a new copy of a game (Diablo II- LOD) but the game would not play. The Blizzard error message suggested that my video card driver might need updating. I searched & searched but the downloads from Apple claimed that those drivers were not right for my machine. The drivers I found for my card at ATI seemed to be Windows "versions". A couple days later I decided to try an application that was suppose to allow me to play Windows versions of games on my Mac without Windows (CrossOver Games a Wine type commercial app, made by codeweavers).

Somehow during my unsuccesful attempts to load games through CrossOver Games, a DriverSmith app poped up on my screen offering to search and update my drivers if I just hit a button. Assuming the app came with the CrossOver Games software I tried it but the button did nothing. I tired trashing it and still the game would not load. I have been posting on the codeweavers site trying to figure out the problem. The codeweaver poster claims that DriverSmith did not come through them but they claim that the game I am trying to load loads fine for them on their 27" iMac running Lion. I have a few driversmith-#.exe files in my trash. In my files: Places>"Home"> Applications>CrossOver Games>DriverSmith, I find 3 files:DriverSmith, Uninstall DriverSmith, driversmith-3. I am trying to figure out where DriverSmith came from? My regular Applications file seems fine and a search in my finder for DriverSmith only reveals the files mentioned above but no others. My best guess is the ATI site or Apple site put the DriverSmith app on my Mac, but this would not explain why DriverSmith programs are in a CrossOver Games folder on my Mac. Although, CrossOver Games does create Wine "bottles" to hold game downloads.It looks on the web site like DriverSmith is built for Windows but I seem to recall something that came up somewhere mentioning working on a Mac. Any light anyone could shine on the subject would be much appreciated.