Care to help me? I'm confused.

I got some dilemma here T_T...when it comes to hardware, I'm completely clueless...

I've an almost 3~4 years old ASUS P4V8X-X motherboard, comes with 2 SATA interface:-
- Click here for more info.

Ok, now is the real problem... I've existing Samsung SpinPoint SP2004C 250GB SATA, that I've bought last year. It's SATA II, but I've used jumper so my motherboard can "operates" with the HDD well [as my friend told me last time.]

And now, I've ran out of space, and there's few HDD models that I've surveyed on the market, and my budget only limits me for getting only 250GB HDD.

This 2 models, Western Digital or Seagate [both 250GB, SATA].

Western Digital:- Click Here.

Seagate:- Click Here.

But from their technical specifications, it mentioned both runs at SATA 3.0GB/s, my friend told me that I can use jumper, same as in my Samsung 200GB.

So can I just use the jumper? Or there's no jumper options at those 2 HDD?

/confused ...