Can you add a Blu Ray Player to an already existing DVD Home Theater System or should I just get a blu ray home theater system?

I was in best buy today talking to one of the sales guys about getting a home theater system. I told him that I wanted to get just a nice 5.1 home theater system in a box like a Sony or Samsung and then later I would want to intergrate a blu ray player into that system. Well he told me I couldn't do that! He said if I bought a regular DVD home theater system and then added a blu ray player that the blu ray player would have to be connected through the TV and not through the home theater system meaning I wouldn't get the full home theater experience when watching a blu ray disk or streaming netflix. In order to do this, I would be better off buying a blu ray home theater system now instead of the standard DVD system.

Does this all sound like accurate information he gave me? Blu ray home theater systems are @ 4-0 and up and I'm not looking to invest that kind of money right now. I just wanted to buy a nice home theater system now and then it was my assumtion that as long as the system I got has HDMI inputs (which most do nowadays) then I could get a blu ray player and hook it up to my home theater system via HDMI and then I'd be set! Is this or is this not the case cause I need to know what kind of money I need to be looking at spending?
Thanks for all the great info. Here's what I went with: Home Theater- http://www.sonystyle.com/webapp/wcs/stores/servlet/ProductDisplay?catalogId=10551&storeId=10151&langId=-1&productId=8198552921665793574&XID=A:404255:10383604:133793:CJ&ref=http://bensbargains.net/category/59/home-theater -AND- Blu ray- http://www.sonystyle.com/webapp/wcs/stores/servlet/ProductDisplay?catalogId=10551&storeId=10151&langId=-1&productId=8198552921665968161&XID=A:404255:10762425:133660:CJ&ref=http://bensbargains.net/category/59/home-theater I think I'll be happy ;>
Here's another question I have on the same topic pretty much:

I think my picture on my HDTV actually looks worse then it did on my old tube TV. Why is that? I have a tivo series 2 DVR which doesn't have any HDMI outputs on it so therefore I know I'm not able to truly get a HD signal but still I would think there is something I can do to get a little better picture ,isn't there? My tivo box only has coax and standard a/v connections and I'm using both and still the picture sucks. I hate to have to buy a new HD tivo or cable box so what are my other options? Will the home theater system I just bought solve this problem perhaps? I just ordered it & I should have it by next weekend so we shall see I guess.

Dolby/DTS effect enabled with Most home theater systems when DVD played. Please Advice me getting a good home theater system/ amplifier that can be synchronize with digital atelite receiver to get actual surround sound effect.
As most service providers transmit/broadcast surround sound effect with prologic. Please Help me with brand name and model no.

I recently purchased a HDTV with 1080p and a blu-ray DVD player (PS3), and wonder what are home theater systems that would provide better outcomes at a reasonable cost (<0). Do I need to buy a system or a receiver and separate speakers with capacity of 7.1 channel and HDMI 1.3 output?. Any recommendations on particular brand name and model?

Thanks ahead of time for your help!

I've been looking up home theater systems and alot of them have Ipod dock built in, do any of them have a Zune dock built in?

I have a Zune not an Ipod

Can i get an attachment to hook a Zune up to a Home theater system?

I know nothing of this stuff and need advice.

I'm looking for a basic and cheaper home theater system that would do surround sound for DVD player, BlueRay player, Xbox, PS3 and my laptop. Any suggestions? Will these normal DVD home theater systems do that?
@The One: Thanks for the answer. So, I should buy a receiver with speakers and not a dvd home theater. But what about TV? Will TV (from normal antennas etc) connect to that receiver for surround sound?

For more details about the SLS Q-Line Gold 5.1 Home Theater System please visit our website at: www.av-express.com The Q Line Gold Home Theater Surround Sound System features 4 bookshelf satellite speakers and one center channel speaker, all utilizing SLS International's PRD100 Planar Ribbon Drivers made in the USA and woven Kevlar midrange drivers. To meet today's demanding low frequency requirements, SLS has included a high excursion, self-powered subwoofer delivering accurate and controlled bass. A multi channel Dolby Digital/DTS surround sound receiver powers the system with 110 watts per channel featuring a built-in room balancing algorithm, component video throughput with video up scaling, on screen display, and a universal remote control. For simple speaker setup for any location arrangement, we have included a omni-directional microphone. This microphone allows you to easily calibrate your speaker setup for optimal sound. For a rich, full audio experience that will leave you on the edge of your seat this home theater system is the ticket. Advanced ribbon driver technology delivers crisp sound, the way it was meant to be heard. Complete home theater system includes center-channel speaker, 4 satellite speakers, subwoofer, and AM/FM receiver. Ribbon driver technology delivers accurate and pure sound with reduced distortion and drop-out Multiple surround sound decoders built in. Order now to get FREE SHIPPING with fedex Ground. While supplies last! When this system is ...