I spent the time to build the latest (as of 12th June 2011) drivers for Xen GPLPV seeing as the ones available at http://www.meadowcourt.org/downloads/ are 8 months out of date.
I used the source code available at http://xenbits.xensource.com/ext/win-pvdrivers, specifically the version tagged 0.11.0.295.
Built using defaults with the 7600.1 Windows SDK.
Download
gplpv_2003x32_0.11.0.295.msi (2.5 MiB, 2,200 hits)gplpv_2003x64_0.11.0.295.msi (3.1 MiB, 1,841 hits)
gplpv_Vista2008x32_0.11.0.295.msi (2.5 MiB, 2,844 hits)
gplpv_Vista2008x64_0.11.0.295.msi (3.1 MiB, 2,534 hits)
gplpv_XP_0.11.0.295.msi (2.5 MiB, 2,761 hits)