I am planning on installing "vista" on my system soon. In a dual boot configuration with windows XP. My question is, If i upgrade my current version TI 9.0 to TI 10.0 Can i install the (single copy)TI 10.0 on both XP and Vista. Or will i be required to purchase 2 copies of TI 10.0? Also are older "images" made with 8.0 and 9.0 compatible with the new 10.0 version?