If you're worried about viruses you can always search the threads where these mouse fixes are mentioned. If any one gets a virus they make a big deal about it.
For example there is a mouse testing utility by Enotus called "mousetest". For some reason it triggers a false positive for a virus on most anti-virus software, so in almost every single place on the net it is mentioned you have someone going "zomg it's a virus".
Anyways, maybe if you understood what these utilities do it wouldn't be so scary. They simply adjust some numbers in the windows registry that control mouse pointer ballistics. What they do can be done manually with regedit even, it just takes a long time and you have to have like a chart or guide for what numbers to put in.
Registry is a very important part of the computer. If it gets messed up that would be very bad I think.
That is why i would not download a file off the internet that I am not very sure of.
I just killed Dr. Wily,yes! only took 23 years I'm going pro
5.26.2013 - reality.cfg - http://corruptreality.com/__old/ - q2 lith ctf - rip luigi
Amd 8350 - 4.4hz
gskill sniper 16 gigs - 1006hz
I am not going to disable accel. How much DPI do you generally need for quake?