Microsoft has announced a “Technology Advancement Program” through which Windows XP Professional owners can upgrade to Windows XP x64 Edition for free. You will need to have an x64 processor (the AMD Athlon 64, AMD Opteron, Intel Pentium 4 with EM64T, or Intel Xeon with EM64T) to run the new software.

Shipping and Handling will be $12 for US orders and $22 for international orders.