I'll try to point you in a direction, whether its right has yet to be determined.
First, go listen to as many speakers as you can and try to define what you like in terms of sound. If you don't like your speakers, no receiver or dvd player will make you like your system any better. Once you know what you're looking for in speakers, check back here and there are knowledgeable people that will give you opinions, options and potentially bargains for what you want.
Choose a receiver according to the features and connectivity you need from a reputable company, like Yamaha, Denon, Onkyo, Marantz, Pioneer, etc.
The dvd player is of least concern as even most bargain players will provide good sound and picture. Feel free to post any potential purchases for review by the knowledgeable people here, and I will humbly exclude myself from that list.