I would google "Intel 4965 wifi linux". You would be astounded at the result you get regarding your card. iwlagn and iwlwifi drivers seem to match your card. Try:
See if can find your hardware. If it is being detected, then I would try:
$sudo modprobe iwlagn (may be iwlwifi but that is suppossed to be phased out)
If you get a new prompt without an error message I would then try:
If you get a list that includes wifi0, wlan0, or ath0, then I would try:
$sudo wicd (doesn't start automatically on this distro until u configure it to)
Then I would click "K Menu" "Internet" "Wicd" and configure my card
Then I would try:
$sudo ifconfig and see if it is showing up
If that doesn't work, then you are going to have to google and research your chipset more than I did to find the answer. Try the Ubuntu forums as well, as there is much more support there because it is a more widely used distro. I found a post on there saying that people were successfully configuring that card with ndiswrapper. I also read that the card had official linux drivers out so reading through their information may help, really read it.
Hope I helped you. The moderators around here get kind of upset when they see such a vague post that is easily googled or search options show the answers. Make sure you are really trying to figure out the problem before you post.