I've tried flashing in Vista without succeding. It couldn't recognize my N900 as a supported device. I think it's an issue with my usb-ports.

Anyhow, in the wiki it says to "boot with unsigned drivers" in 64-bit Vista. That might work, if youre running that version.

http://talk.maemo.org/showpost.php?p...9&postcount=67

EDIT: Lol. Same time, same advice. Ps. I flashed with XP too.