thank you for answering me. I test win vista very much. all question that I write are bug of vista or my way to do. I want to see it's my fail or bug. I install vista for 5-6 times.with xp & without it.I have 2 pc & I can test it with both. if u have an ID in yahoo mesenger or other messengers please write that to chat. it's the simplest way to discuss about that & other problem for increse our knowldege. excuse me if my gramer & writing have wrong.(I'm not professional on eng lan.)