Harddrive question

i recently won 200 dollars and i am going to buy a hard drive and sound card

can i mix two different hard drive companies.

Is this a serious que-

Get a Mac.

lol of course you CAN'T! It's either western digital all the way, or throw your shit out the window.

In all honesty, I agree with the above.

YES. But western digital is the best no matter what

i want to get this sound card http://www.newegg.com/Product/Product.aspx?Item=N82E16829271001

and then i need to decide if i want to sell my old Hitachi 500gb and then get the western digital 1.5 tb

or just get a 1tb Hitachi