On that WAN Network driver, XP will just keep reinstalling it until you use "Disable" instead of Remove.
You need to run Pitstop Disk Space Autofix and then Ace on the box while the E drive is connected to cleanup the E drive. If you have been putting a lot of things on it then later removing them you would have a lot of "Junk" files left behind that are slowing down the Uncached speed.
Those two items will be worth 20 points in score to you and will put you over 610.