FS2002 is pretty out dated by now. They use a different server from FS2004 live weather and FS2004 is the main product now so it is kept as accurate as possible via weather stations but the FS2002 ones are only updated every hour or so and the FS2004 ones every minute.
I have FS2004 it wont work on my computer(not fast enough). So I just keep using FS2002. It helps stay IFR proficient. Maybe it's time for a new computer! Not sure what to get. Can anyone tell me a good desktop for FS??