install-instructions-windows.txt

see the other instructions for general installation steps.

PostgreSQL 32 and 64 bit use different binary database formats.
You will get random errors with some SQL statements when a 32 bit data directory is used with a 64 bit PostgreSQL engine.

qlstats uses a 32bit version of PostgreSQL 9.4. Download the "Win x86-32" 9.4 zip package from https://www.enterprisedb.com/download-postgresql-binaries.
To run PostgreSQL with database files located in D:\PostgreSQL use: postgres.exe -d D:\PostgreSQL.3

Python 2.7 should also be 32bit (because psycopg2 uses native DLLs to access PostgreSQL from Python): https://www.python.org/downloads/release/python-2718/

To install dependencies for XonStat/QLStats:
cd /d d:\sources\qlstats\xonstat
set PYTHONPATH=%cd%\lib\python
mkdir %PYTHONPATH%
pip install pastescript
python setup.py install --home=%cd%
paster serve local.ini