I want my PC on the other side of my desk, like in the very crude diagram below, but when I have it there, my wireless signal drops to less than 40% from 90% on the other end of my desk. So I was wondering what I could do to improve it? Ive changed the channels and settings before you say, and no, It didn't help 
This is how my wireless is setup at this moment.
I have a Belkin N wireless PCI adaptor and a Belkin F5D8633UK4A
Here is an idea Ive had to solve my problem
Ive read that these gaming adapters can be used as wireless adapters for computers, I thought It would be good to run a long ish Ethernet cable around my room to where its placed on the diagram, giving me a better connection. Hopefully.
You might all shun me, but I have no idea on networks. I hate them and to be honest, I'd rather have a wired connection, but I cant be done.
Any help would be greatly appreciated!

This is how my wireless is setup at this moment.
I have a Belkin N wireless PCI adaptor and a Belkin F5D8633UK4A

Here is an idea Ive had to solve my problem

Ive read that these gaming adapters can be used as wireless adapters for computers, I thought It would be good to run a long ish Ethernet cable around my room to where its placed on the diagram, giving me a better connection. Hopefully.
You might all shun me, but I have no idea on networks. I hate them and to be honest, I'd rather have a wired connection, but I cant be done.
Any help would be greatly appreciated!