I created distant land at minimum 128 and still doesnt work. I load a save and the game crush. I searched but didn't find the answer to my question: WHAT could be the problem?

You mean a cell distance of 128? That's way, way too much. Try something like 10.

I think he means "minimum static size".

No I mean the resolution of the textures and normalmaps. Really low settings, but damn it, it just don't want to work. What could I mistake? My pc is not a stonage one.

All MGE related questions should be in the current http://www.gamesas.com/index.php?/topic/1159516-morrowind-graphics-extender-mge/. (that's what it's for, and you'll get much quicker results)

Thank you (I didn't found it before).

http://sourceforge.net/apps/mediawiki/morrgraphext/index.php?title=Installing_MGE_correctly