http://www.dslreports.com/faq/tweaks

I've found that stock Windows actually is pretty good. Also if the setup is done per the Cnet Networking forum stick or top post there is often not much to do beyond that.

Download accelerators have been a fine source of income for my friends who run around fixing machines. Hint: they uninstall those and clean out the malware that often is installed with such.
Bob