Wireless connectivity issues with IdeaPad Z575 on N network

[Blahzay]

I recently got an N capable router, and have had connectivity issues ever since.  Never had problem with G.  The new N network uses WPA2 security, but Windows 7 seems to recognize it as WEP.  Entering the passkey results in an error, and I'm thinking this is because of the security type.

I downloaded the latest wifi card driver directly from ralinktech.com, but that doesn't seem to have helped.  Curious if anybody has encountered this before.

[Kengs]

I know the Z575 and Win 7 are able to use WPA2 w/out problems on a G-router but I haven't tried it on an N-router yet. Maybe it's the router?

[Blahzay]

A bunch of other computers (including a Lenovo Thinkpad) are all able to connect with no problems...