Of the first 29 listed, I would say the only thing to keep is the svchost.exe files as you never know what those are, which there are 4 out of the first 29. Then keep ctfmon.exe out of the 29 as well. I can't remember what that is, but I think I got errors when I ended mine thus needing to reboot. That takes you down to about 15 processes which is around where I'm running at with pretty much the same names as what you would have.
This is all for the racing and not websurfing, etc. And, I'm on dialup, so I don't mess around with having firewalls and antivirus crap clogging up my system.
Oh, and I see 2 files as CLI.exe. I can't remember what that is either. I may have that one running. That gives you 16 of the 38 you have currently giving it a huge weight reduction diet. I actually have 18, but the extra 2 over the 16 I see on yours would be for my second PC and the internet sharing stuff (no router, I just run it through my main PC).
Your ATI card should run just fine without those ati*** files. Mine does. You shouldn't need rFactor unlocking/security if you are racing LFS, right? hehehe. Unless you are having problems with your sound, I doubt you need sndhelp.exe running.
SnagIt you would want only if you were capturing screenshots all the time. FYI, I use FSScreen.exe. It is only 16k as opposed to your 6,456k + 2,676k SnagIt. But it only captures in .bmp format and you have to convert to jpeg manually with something else later.