increase ur internet speed by 20%

Microsoft reserves 20% of your available bandwidth for their own purposes like Windows Updates and interrogating your PC etc.
You can get it back:
Click Start then Run and type "gpedit.msc" without quotes.This opens the group policy editor. Then go to:Local Computer Policy -----> Computer Configuration -------> Administrative Templates ------> Network --------> QOS Packet Scheduler and then to Limit Reservable Bandwidth.
Double click on Limit Reservable bandwidth. It will say it is not configured.click on Enable then set the bandwidth to ZERO. This will allow the system to reserve nothing, rather than the default 20%.