Both XP and 2000 are still configured out of the box with respect to Ethernet rather than high-speed Internet connections, where latency plays a major role in throughput. Some people still use dial-up. Therefore Windows out of the box has to find a happy medium between dial-up and cable. Here, you will find specific information on how to optimize the Windows 2000/XP Registry for Cable Modems, DSL, or any similar type of broadband Internet connection.
I typically get around a 15% - 25% increase in my MB/Sec after these tweaks.
NOTE: Please, before you begin, back up your registry. Go create a restore point right now!
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