Can't connect MacBook (Core 2 Duo) to AExpress "N" network

Hi folks,
I have a MacBook which connects happily to my home Airport Express wireless-G network. However, my parents have an Airport Express which is a year or two newer, and theirs is wireless-N. I have searched the discussion pages here for guidance on why I can't connect to their network. My MacBook sees the N network, I have the password, but it just won't connect. At first I thought my MacBook was not compatible with N, but these discussion pages seem to say that mine should have the capability. I found something about downloading a $2 "wireless N updater enabler" software from Apple, which I did, but it wouldn't install, perhaps because my OS is already up to date? (I think the enabler update was more for OS 10.4 users?)
I have confirmed that I have Intel Core 2 Duo processor, which is a prerequisite. I confirmed that I have a wireless b/g/n ready airport card on board (I think it was the Network Utility software which showed me that).
But I can't figure out what else I need to do in order to connect to the N network.
Grateful for any help. Thanks.
-- Josh

I had this problem with my MacBook connecting to my Linksys N Router. They had me change the wireless security from WPA to WPA 2 and now it connects as 802.11n. Speed still seems a bit slow as it only connects at 72 Mbit/s but it is better than the 54 Mbit/s it was connecting at before the change...

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is there any reason that you do not want
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1-800-275-2273 Apple Support. Automated call
yet if you call back you can get in touch with an
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your iPhone.
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A

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Army wrote:
This might not help you a lot, but if you want a stable system, try using packages from the repo wherever possible, look at the news before you update your system and don't mess things up (like bad configuration etc.).
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