Hi guys 
I have an OCUK Value Wireless-N PCI Adapter and get really rubbish signal from my wireless n router. To be fair it is quite far away and my computer is under a desk with a load of metal drawers in between it and the router.
My router is a sold box with no antenna so I can't extend the antenna or anything. So I recently bought a 2.8m WIFI antenna extension cable SMA off a well known market site
with the aim of extending my own antenna out from under the desk. But it doesn't seem to do anything, reception is not improved even though I put the extended antenna next to my laptop which has 'excellent' reception.
Any ideas? Does the extension cable plan sound like a good or stupid one in principle?
Any help would be awesome.

I have an OCUK Value Wireless-N PCI Adapter and get really rubbish signal from my wireless n router. To be fair it is quite far away and my computer is under a desk with a load of metal drawers in between it and the router.
My router is a sold box with no antenna so I can't extend the antenna or anything. So I recently bought a 2.8m WIFI antenna extension cable SMA off a well known market site

Any ideas? Does the extension cable plan sound like a good or stupid one in principle?
Any help would be awesome.