Get a Mac and you can run XP, Vista, OSX, Win7, and Linux – natively or in a virtual machine – as you please, Bob. Be it 32-bit or 64-bit.
Want to know if your tethered setup will work in 64-bit? Test it
now, on your present machine: download Win7 (64;
http://www.microsoft.com/windows/win...-download.aspx; free for a year) and VirtualBox (
VirtualBox; free), then install that Win7 in VirtualBox, and run your tethered setup on it. If it works it works...!