Runrmtcmd Windows 7

<cross posted cause it's an RPG program talking to a PC>

I'm having a problem with a new laptop that has Windows 7. I have a process
that's worked well forever on XP. Basically the RPG program does an rexec to
the client, and the PC runs a batch file that displays an image. However, on
Windows 7, the process locks up on the recv from what I believe to be a
valid socket. And yes, I'm using Scott's code to do this. The recv doesn't
return an error...it just never returns.

I can do a runrmtcmd and that processes correctly...like a dir or something
and it creates the spooled file as expected. So that tells me that the PC is
listening and responding. This PC is set up as other PCs, and it's running
the same code. PC firewall is off. I'm running System i Access for Windows,
Version 6 Release 1 Mod 0, Service Level SI37891. The i is running V5R4, and
pretty current on PTFs. Incoming Remote Command tab is set up the same way
as an XP PC. The Incoming Remote Command Service is set up the same way as
an XP PC.

Anyone have any ideas?