Nope, sorry. Two different beasts. Put simply, Bluetooth is for direct device-to-device communication and WiFi is for device-to-server connection (via router, modem etc.). Device-to-device over Wifi is possible only with the router.
More info on WiFi here:
http://en.wikipedia.org/wiki/Wifi
More info on Bluetooth here:
http://en.wikipedia.org/wiki/Bluetooth
Be sure to check out the links referring to WLAN and PAN.
