or download this
Warning: Attempt to load 'Tk::Checkbutton::0.000503063201904297' at
/usr/lib/perl5/site_perl/5.8.0/i386-linux-thread-multi/Tk/Widget.pm
...
line 406 eval {...} called at
/usr/lib/perl5/site_perl/5.8.0/i386-linux-thread-multi/Tk.pm line 406
Tk::MainLoop() called at x line 126