Just in case any of you are interested, here's the source code and files for the SIM unlocker, which includes the HSPL:
http://www.mediafire.com/download.php?1jzizmz4lz2
It was originally compressed with mpress, so I extracted that and de-compressed it. Then it was run through Reflector to generate the C# source code. In order to re-compile it, you will need to clean up the InitializeComponent in form1.cs under AthenaUnlocker, just delete what VS2008 gives errors for.
l8r
RU