It should work a lot better.
I have the V2 router from sky with wireless turned off and a 802.11n AP attached - absolutely fantastic.
Only ever so slighty slower on loading pages than my desktop (I have 16Mb connection) and a I use a Belkin 802.11n card.
In my very limited experence with wireless, I've found the internal wireless of laptops to be not that good. Try and test with an external card....????