Yeah, I've been using it with Mouse Acceleration off, and I just always seem to need to give it that extra push after my initial movement to get it to where I want. I think I'll try to get used to having mouse acceleration on for the time being, and see if I get pwned at all those FPS. I found an article that goes through the registry entries that you can change to modify the threshold and how fast it accelerates etc, but I think I'll just try to get used to the default XP profile for now. If all fails (ie, bottom of the ladder in game summeries), I'll try to tweak them a little, then finally turn it off.
I haven't actually installed anything for my mouse. The box says plug and play is fine, so I did just that. Can't be bothered having other software to deal with. I've actually got a little button behind the scroll wheel that lets me search a highlighted text using a preselected search engine(after installing Logitech Setpoint v.x.x.x) but for now, it seems to function as a "back" button.
Again, thnx for the input.