8185 for windows is the top set, and you only need the driver then use the very first row which is for Vista. Pick site 6 because that should be closest to where you live, if that site isn't up then try one of the US sites.
But cannot identify on the network is not the same as not having a network driver installed. If you open control panel > device manager and see if there are any yellow attention flags for a missing device driver. If not then you have a driver that the computer thinks is working.
Did your network ever work with this computer? If not, is the computer new or is it the network provider that is new? What is the make/model of your wireless router? When was it set up? Do you have other computers connecting to it?
Though wireless router support is backwards compatible you may need to set it to allow mixed mode 802.11g and 802.11n signals. Also some routers can do 2.4 GHz and 5.0GHz and some routers can do it simultaneously but others can not. If you have one computer connecting with N at 5.0MHz and your computer has an old G wireless adapter then unless your router allows simultaneous it won't work. to test if this is the issue you should turn off all your other connections to the router and see if your computer can connect then. If you don't secure your router then close-by neighbors could even be using your signal and utilizing the 5.0GHz frequency.