o UPgrades to latest version of WinPcap (4.1.1)
o corrects a long-standing bug in our WinPcap installer (we surrounded
the install path in the registry with double quotes, which meant we
wouldn't uninstall our older versions during an install)
o removed the GUI option to select where the WinPcap files are
installed (all of the important ones end up in the Windows directory
anyway). WinPcap folder is installed in the same Program Files
location on x64 platforms as the official WinPcap installer uses
(although we're not sure that is the best place)
o Rob notes that he's successfully tested the installer on XP SP3,
2003 SP2 x86, Vista SP2 x86 and Windows 7 x64