Hello guys, Having Dell XPS laptop working on windows vista. It has 3GB RAM, 456 GB hard drive, with this Ati radeon graphical interface and the Intel dual core processor. Normally attach my laptop with my wireless network connection in my office as well as at home. There is a wireless printer Brother MFC 7840W, which is also attached with my device and print few documents. It is not detected by my laptop and when it detects it is not able to print. Please advise me. Thanks!