I have downloaded about all the scenery fromsimvition

but when I had install them FS2002 does not work any more
he did not start at all.
why?
Hmmm. That must be a lot of scenery. ::)
I just checked the FS2002 Scenery section. It's currently on page 62. With an average of 10 files posted on each page that makes 620 different areas in the FS2002 section alone, not including the US Mesh Terrain which is posted separately. The FS2002 Scenery.cfg has a limit of around 333 areas. If you went on a mad download spree & added this all at the same time it could well cause a problem.
I don't know which method you used for installing scenery. The only method I would recommend is installing each area separately & activating it via the Scenery Library. Activate one area at a time & check it in the sim before activating the next. Then, if there's a conflict it can be easily deactivated. Please read my tute & follow the instructions.
http://www.simviation.com/lair/fs2002sc.htm This method can be used for all types of scenery in FS2002.
Take my tip & ignore all advice or instructions to unzip files direct to FS2002. This is the most common cause of all problems with installing addons of any type.