The only thing I can think of is that perhaps your Intel software needs to be updated as well as the drivers for your network card.
It's possible that your card supports N but the intel software isn't updated for it...
Both can be found here.
I assume your pc has the Intel® Wireless WiFi Link 4965AGN
Updated drivers for (Released Date:8/1/2008)
-Intel® WiFi Link 5100: 188.8.131.52
-Intel® WiFi Link 5300: 184.108.40.206
-Intel® Wireless WiFi Link 4965AGN: 220.127.116.11
-Intel® PRO/Wireless 3945ABG Network Connection: 18.104.22.168
-Intel® PRO/Wireless 2200BG Network Connection: 22.214.171.124(32-bit OS support only)
-Intel® PRO/Wireless 2915ABG Network Connection: 126.96.36.199
(32-bit OS support only)http://downloadcente...s...on&lang=eng
Here is the updated software for the intel proset (Released Date:8/1/2008)http://downloadcente...s...on&lang=eng
Update your drivers and see if that works for you.
PS: Both the above drivers work with Vista and XP 32bit. (If you bought your pc before 8/1/08) chances are you could benefit from the updates.
Edited by AitrusSkyy, 24 September 2008 - 07:35 AM.