New Keyboard problems

[StarLancer]

I just got me a new Logitech keyboard and it works and all but my problem is that it wont let me use more than 2 keys at once...
This is a real pain for FPS games and I was wondering if anyone has a solution for this.

Its a PS/2 Keyboard.
heres the Newegg.com link:
http://www.newegg.com/Product/Product.asp?Item=N82E16823126170

 

[Wheelman56]

mmmm, I had a similar problem when I tried to use a PS/2 > USB adapter after breaking one of my PS/2 ports. Are you using one of these? If not I couldnt' think of why you would be having this problem.

 

[StarLancer]

nope, no adapters.