P:\test>assoc .plb
.plb=perl_background_script

P:\test>ftype perl_background_script
perl_background_script=wperl.exe "%1"

##</code><code>##

P:\test>exetype \bin\wperl.exe
\bin\wperl.exe uses the WINDOWS subsystem.

##</code><code>##

P:\test>exetype \bin\perl5.8.0.exe
\bin\perl5.8.0.exe uses the CONSOLE subsystem.

##</code><code>##

P:\test>exetype \bin\wperl.exe WINDOWS