SOAP::Lite is definitely the way to go, maybe create a wrapper module, MyMod, around your Win32::OLE stuff or maybe use Win32::OLE directly then write a simple service script such as: -

use SOAP::Transport::HTTP;
my $server = SOAP::Transport::HTTP::Daemon
->new(LocalAddr => '192.168.0.1', LocalPort => 666)
->objects_by_reference('MyMod')
->dispatch_with(
  {'http://192.168.0.1/MyMod' => 'MyMod'},
);
$server->handle;
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the "objects_by_reference" part is very important since Win32::OLE objects are quite complicated, you must also use SOAPs HTTP Transport otherwise "objects_by_reference" won't work. then write your client script like: -

use SOAP::Lite
# trace => [ all, -transport ],
  dispatch_from => 'MyMod',
  uri => 'http://192.168.0.1/MyMod',
  proxy => ['http://192.168.0.1:666', timeout => 6000]
;
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this would be equivalent to "use MyMod" in your client.