Advanced options only has two different sections, Plugins and Display.
This is where GetGo will search for the protocol dlls that it supports. It is reccommended not to touch this unless you know what you are doing.
This reflects visually how fast the download data is updated, not how fast you download from the network. You can choose Fast, Normal, or Slow update speeds.
You can choose to have the display file units in Megabytes, Kilobytes, or Bytes.