Do you know why you are having trouble launching the
rendering process? Without some information on that it
will be hard to help. Best would be if you could find a
way to launch it from a DOS prompt. If you can do it from
the command prompt then it is much easier to figure out
what you need to do in Perl. If you cannot launch it from
the command prompt then you should look for any other
programs that can launch it. One guess would be that you
would have some way to do it with OLE.
But really without further information we are at, "Well
what should work doesn't. How do I do this?"