I am using tradetiger of sharekhan in XP service pack 3. I want to install windows 7. but i came to know that there is some login problem in odin login on win 7. so is it better to stay on XP or install Win 7 ???? I am using BSNL broadband Connection.My System is dual core 3 GHz with 1.5 GB ram. Is there any difference in Win 7 Ultimate 32 bit & 64 Bit ?????