Problem running the socket programming

[anil adenan]

Hello,
    I have a socket programming that is running smoothly in our clients
HP UX version 10.20 machine.  They are now migrating to a new server and
HP UX 11.11. The problem is that the socket program is now not working.
It gave the error message- perl:  not found.
    I've created a testing perl that wud just display 'Hello World' and
it works.  Please help.