I don't suggest HTIBs, other users don't seem to have a problem with them, seeing your budget constraints, the cheapest suggestions I have start at ~$1000, so you might want to look at what others have to say feedback wise on HTIBs, with that out of the way:
generally DVD-integrated HTIB products are frowned upon, as its a lower quality product (generally, not always)
yes you'll have surround sound from anything connected to the reciever that produces a surround signal (meaning TV likely won't be 5.1, unless your reciever comes with an upconversion method, most all DVD's have a 5.1 track, most modern games have a 5.1 track available)
getting HDMI is advisable, as it gives you a single connection for video/audio, however as it sounds like your system's needs have thus far been met without HDMI, I wouldn't be too worried (you don't explicitly need HDMI, some may argue quality, however component video, DVI, VGA, and most other decent interfaces will be fine (S-Video is about the "least decent" I'd go, at least with an HDTV using widescreen formats)), so if it doesn't have HDMI, don't worry all that much about it, just realize that its a common standard, and a number of HD capable devices will utilize it (however don't expect to find a reciever with more than one HDMI input for anything less than ~$800, you can get HDMI switch devices (personally I'm opposed) which many have reported luck with)
sorry that I can't be much more help with specific systems, just answering what I can
i was wondering if you all might be able to help me out. currently, i have a sharp aquos 46" tv (http://www.sharpusa.com/products/ModelLanding/0,1058,1745,00.html), and sony dvd player (http://www.boscovs.com/StoreFrontWeb/Product.bos?assortmentDepartmentNumber=7014500&assortmentId=2&itemNumber=59579&type=Product). the dvd player is old, and i wouldn't mind having a better one. the htib is for my family room, approx: 14'x18'
preferences/requirements (in order of importance):
1 - no rear wireless speakers. i need the wires to run from front to back. (has to due w/ setup of family room and how back of room is a walkway and open).
2 - great sound (thats, a given =))
3 - upconversion of dvds. considering that i have a 1080p capable tv, i'd like to watch my dvds withs the best quality w/o having to upgrade to hd dvd or blu-ray.
1 - of most importance, i'd like to keep it as close to $500 as possible.
2 - i've read a lot about the onkyo ht sr800. i'm okay with not having a dvd player if this thing is that good. are there any good, and not too expensive dvd players to add to this to keep around $500?
my stupid questions:
1 - i would love to have my tv, dvd player, and wii to have surround sound once the htib is set up. is this possible and how?
2 - do i need a htib w/ and hdmi input? whats the advantage?
i appreciate any help/input to anyone of my various questions! thanks a lot!