Windows binaries for the PCI Utilities

pciutils-3.4.0-win32.zip - 32-bit Windows version (runs on both x86 and x64 Windows)
pciutils-3.4.0-win64.zip - 64-bit Windows version (only works on x64 Windows)
lspci and setpci require Administrator privileges for certain operations - run them in an elevated command prompt on Windows Vista and newer

Source code
Old versions