Leading / indicates that searching for the path must be done from the top of the file system. If you want searching to be started from current directory, then remove it or preceed with '.' indicating current directory. So it would be

D:\iw-home>/iw-perl/bin/iwperl httpd/iw-bin/javaTest.pl
[download]

Disclaimer, these are the rules for "unix" environment. I don't know how perl handles things under windows.