D:\>perl parse_useragent.pl
Can't locate version/vpp.pm in @INC (@INC contains: C:/Perl/lib C:/Perl/site/lib .) at (eval 7) line 2.
BEGIN failed--compilation aborted at (eval 7) line 2.
Compilation failed in require at C:/Perl/site/lib/Parse/HTTP/UserAgent.pm line 18.
BEGIN failed--compilation aborted at C:/Perl/site/lib/Parse/HTTP/UserAgent.pm line 18.
Compilation failed in require at parse_useragent.pl line 7.
BEGIN failed--compilation aborted at parse_useragent.pl line 7 (#1)
    (F) You said to do (or require, or use) a file that couldn't be
    found. Perl looks for the file in all the locations mentioned in @INC,
    unless the file name included the full path to the file.  Perhaps you
    need to set the PERL5LIB or PERL5OPT environment variable to say where
    the extra library is, or maybe the script needs to add the library name
    to @INC.  Or maybe you just misspelled the name of the file.  See
    perlfunc/require and lib.

Uncaught exception from user code:
        Can't locate version/vpp.pm in @INC (@INC contains: C:/Perl/lib C:/Perl/site/lib .) at (eval 7) line 2.
BEGIN failed--compilation aborted at (eval 7) line 2.
Compilation failed in require at C:/Perl/site/lib/Parse/HTTP/UserAgent.pm line 18.
BEGIN failed--compilation aborted at C:/Perl/site/lib/Parse/HTTP/UserAgent.pm line 18.
Compilation failed in require at parse_useragent.pl line 7.
BEGIN failed--compilation aborted at parse_useragent.pl line 7.
 at parse_useragent.pl line 7