The HP G60-535DX is a nice and cheap notebook that ships with Windows 7 Home Premium. Unfortunately, the hardware for which I bought this notebook is not yet Windows 7 compatible, so an XP downgrade is necessary.
Installing XP on the G60-535DX was relatively painful. HP doesn't publish any XP drivers for this notebook, nor any specific model numbers of its components, and Windows Update only handled a couple of minor drivers, like the trackpad. Hopefully, this info will help someone facing the same task.