Windows Phone 7 Developer Unlock

Source http://www.chevronwp7.com/

Instruction

(1) Install this certificate in your Windows Phone 7 via IE : http://www.chevronwp7.com/cert

(2) Download and install this registration key in your Windows 7 OS http://walshie.me/PhoneRegAdd.reg

(3) Download and run this program http://walshie.me/ChevronWP7.exe in Windows 7 OS


Other Hacks
copy files to WP7 device in Windows Explorer
http://downloadsquad.switched.com/2010/11/20/copy-files-to-a-windows-phone-7-device-in-windows-explorer?icid=sphere_blogsmith_inpage_engadget

USB Tethering
http://www.engadget.com/2010/11/11/windows-phone-7-usb-tethering-uncovered-on-samsung-phones/