http://h10025.www1.hp.com/ewfrf/wc/findModel?lc=en&dlc=en&cc=us
There are quite a few different dv6500 models to pick from.
You can also do a forum search, you are by far not the first to look for drivers for a system not made for Win 7.
At best you can try the Vista drivers, if they don't work, you need to use whatever operating system HP has drivers for.