Lagspikes with multiple laptops

Hey everyone!

Well; I'm having a little issue :P.
We have got wireless internet for not too long now. And there are in total
1 pc wired
2 laptops wireless

The thing is. I have been getting these weird lagspikes lately. I mostly notice it while playing games like WoW etc.
The weird thing is, it only happens when my brother is playing on his laptop aswell. He was away this weekend, and didn't have any lagspikes at all. He came back today, and had random lagspikes asa he was playing on his laptop aswell.

I have checked through CMD and ms keeps around 15 & suddenly jumps up to 1000 ms + occasionally. (Not every minute, Mostly takes a bit longer than that. so i don't believe it has anything to do with finding new wireless connections like vista)

We both have windows 7.

I can't tell you my wireless specs or anything yet, because i'm totally clueless about this. My father bought it, and these things are chinese for me :P.
So if it's really necessairy to post it here too, I will look it up ^^.


Does anyone else knows how to help this?

Thanks in advance!

Bump. Still having this issue - Anyone else had this before?

Anyone? It's getting really annoying, and can't find a replicate of this problem anywhere else..