Hi there

I'm exploring the possibility of putting 802.11n in my HTPC again but I'm wondering if anyone knows of an adapter (PCI or USB) that works in the 5Ghz frequency so that I can use it with my Airport Extreme and keep it off my G network?  I've had a look on the Ascent site but it doesn't look good.  Thought I'd pick the brains of the hive here ;)

Any help appreciated.