NOTE: this trick is applicable to Windows operating system only

To really maximize your internet browsing and downloading, if you have two or more USB broadband stick, by having multiple internet connection, here is a simple trick.

FIRST
– configure each USB broadband stick to use different proxies

SECOND
– open registry editor (REGEDIT.exe) and navigate to the following key

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\servic es\NetBT\Parameters

THIRD
-create a DWORD value named RandomAdapter and set the value to 1

FOURTH
-reboot and enjoy

Credits http://www.symbianize.com/showthread.php?t=439571