Surround Sound Speaker Systems

Hello!
I currently have a stereo system which is fine for listening music (suits my needs for now). I want to accompany it with a centre speaker and a pair of satellites for movies. I don't want to spend too much but also don't want the new speakers to mess up the sound quality I can get from my current system. What speakers would you recommend?
My current system consists of:

I am planning to get Creative 6.1 for my room surround sound, if some one has already using it then tell how its works and all about sound quality.
 
CD Replication

 Which is better to buy? I'll be using it for my XBOX and AVI files but I'll be using the TV instead of PC. Probably doing Matrix mode (for avi) most of the time (will matrix still be better than 2.1). Please advise.

 If you had $1000 to spend on a new centre speaker what would it be?

I've looked everywhere for the Wharfedale surround sound system recomended by Home Theater.  Does anyone know where to buy it.
 
Thanks,
 
G

I'm building a new room which will be 13'x14'x 8'in the front and 10'9" in the rear. I now have a 5.1 system with di-poles for surrounds. I now want to go to 7.1.
My question is: Would another pair of di-poles be best or should i go for direct in-walls for the rears. (all paradigm studio reference speakers.)
Thanks for any input.
Roger

I have been using my Marantz SR5200 receiver and 5.1 Paradigm speakers
with a Panasonic DVD player for past several years. With the optical
audio output of the DVD player connected to the receiver's optical
audio input, I was able to hear good surround sound from all speakers.
Now I have upgraded to Samsung BD-P1600 bluray player and the optical
audio output of bluray player is connected to receiver's optical audio
input. When I play a DVD movie in the bluray player and the player is
setup to output a PCM signal, I hear only stereo sound from the front

Good Day to everyone (it's evening time here in Greece, but I presume that the majority of the fellow members, who might read this topic, are located in US, therefore my "Good Day" addressing).

Hi all,

Hello everyone. This is my first day as a member of AVguide.com and I am excited to pick  some of your brains about my first modest attempt at a home theater setup. First my equipment:   Pioneer 1018-ah receiver, Pioneer 51-BDP blu ray player, Samsung 50" 1080p plasma(not sure the model, I am at work), Energy RCLCR, Energy RC10x2(fronts), Monitor Audio R90-HDx2(surrounds) and a Martin Logan Abyss subwoofer. I Finally got it all hooked up yesterday and I used the Pioneer MCACC room calibration and the 5 speakers sound great!