This page contain download link to 64 bits version of the Windows utility RedMon.
The official Webpage (with 32 bits version) of Redmon is http://www.cs.wisc.edu/~ghost/redmon/ and http://www.cs.wisc.edu/~ghost/redmon/en/redmon.htm.
Redmon is often used with Ghostscript and Adobe PPD file. There is no version of Adobe Postscript printer driver for Windows 64 bits at this time, so you cat uses a modified .inf file with Microsoft printer drivers and Adobe PPD file (on adobeinf.zip). This INF file can be used with Windows 2000, XP or 2003 server, both 32 and 64 bits, with Adobe PPD file, from Adobe Web site.
The 32 bits version of Ghostscript is compatible with 32 bits emulation of Windows 64 bits (Windows on Windows), unlike Redmon, which need this specific 64 bits version.
There is a lot of page on the internet to configure RedMon and Ghostscript together, by example:
For question about the 64 bits compilation, visit http://www.winimage.info/forum/viewtopic.php?t=126 .
For all other question about RedMon, take contact from original RedMon page.