winds aloft

[GSLOC]

Hi there.
Could smb tell me please, how to access winds aloft data (flight level - wind dir/spd and temp) - NOT charts/images, only raw data (ascii). I know about GRIB files and the model i apparently need - "GFS", however as i have never dealt with them it's confusing how to extract data and actually which files i need (talking about noaa's ftp)...

PS World coverage, up to fl390

[Bob Lenahan]

U.S. and some outlying areas at
http://aviationweather.noaa.gov/

Winds/Temps---Winds/Temps Text.

Rest of the world is charts: FlightFolder.