My build of wget is now woefully out of date. You’re encouraged to look at https://eternallybored.org/misc/wget/ for a more up to date version.
Having laboured over this for the past day, I thought I’d post this here.
It’s the AMD64 port of wget – it should run on Windows x64 Professional (Intel or AMD architecture) as well as the Windows Server 2003 64 bit versions.
Be warned however, this doesn’t contain the SSL libraries so will not work against https sites.