Search CG for it! This q has been asked many times b4 here.

http://www.codeguru.com/forum/showth...ight=UML+Tools

http://www.codeguru.com/forum/showth...ight=UML+Tools

http://www.codeguru.com/forum/showth...ight=UML+Tools

http://www.codeguru.com/forum/showth...ight=UML+Tools

HTH,