By this video u cn learn how to increase ur internet speed

Increase bandwidth limit in your windows 7

This tutorial will explain how to Increase bandwidth limit in Windows 7 Home Premium

1. Go to Start > Run… > type ‘regedit’ > OK

2. See if you find HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\Psched

3. If you find it, set NonBestEffortLimit to the value ’0′ if you want to set to 0.

The QoS Service have to be running.

You could also have a look here: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\Psched\Parameters\Adapters

You have to go through all your network adapters, though.

There is a feature in windows xp (Packet Scheduler) which take 20% of your internet connection band width. You can disable this feature.
1- Go to Start Menu > Run and then type "gpedit.msc" to run Group Policy.
2- Go to Local Computer Policy > Computer Configuration > Administrative Templates.
3- Under Administrative Templates, expand Network and then Qos Packet Scheduler.
4- In the right panel, right click on Limit reservable bandwidth and then select Properties.
5- In Limit reservable bandwidth Properties, click on Setting tab and then enable Limit reservable bandwidth.
6- Here you can change Bandwidth Limit from default (20) to 0.
7- Now , go to your Connection properties, select Networking and be sure Packet Scheduler is enabled . click ok and the restart your computer