In Windows 2000 your program associates with .jar extension in spite of it registered for Java Runtime Environment. Now I can't start any Java applications a n d n e e d t o r e i n s t a l l J R E . A n d t h a t w a s a l s o i n l a s t v e r s i o n s o f U E . I t h i n k y o u s h o u l d m a d e a s s o c i a t i o n o f f i l e s o p t i o n a l , e v e n f o r u n r e g i s t e r e d f i l e t y p e s , b e c a u s e i t n o t a l w a y s s a f e . S o r r y f o r s p a c e s , b u t w i t h o u t t h e m y o u r s i t e s c r i p t b l o c k s m y m e s s a g e s .