Thanks,everyone. I'll try them as soon as possible. If I would have any further question,I might ask you again. Regards, Kouichi Kobayashi Senior Tokyo University of Science _________________________________________________________________ $B$"$J$?$N(BPC$B$r<i$k$?$a$KDj4|E*$J%;%-%e%j%F%#BP:v$r!#%^%$%/%m%=%U%H(B $B%;%-%e%j(B $B%F%#>pJs%;%s%?!<(B http://www.microsoft.com/japan/protect/hm.asp