Need some wireless setup advice..

First of all, I'm back! I've been off and on 2o2p not as much as I'd like- real life has been hectic! Things are going very well, though.

For as many tech-savvy people as there are in 2o2p, I was hoping to get some advice on a wireless setup. I have DSL setup and currently only one thing can be hooked up at a time. I used to have a router a while ago, but at the time was having a lot of connection problems due to wiring outside of the house. Since then, all is fixed with that and wanted to get the house hooked up for wireless. I'd like to have my computer, 360, PS3, and blu-ray player (has netflix) all hooked up to the internet. I was hoping some of you could recommend a good wireless setup, especially one that won't slow down the game play online. I've heard from some that wireless can sometimes be a little slower than wired and would like to minimize that problem if possible. I guess I need to know what a good wireless router would be to get as well as wireless adaptors.

If anyone could offer any help, I would really appreciate it.

I'd appreciate a million dollars, too, but let's start with the wireless setup first!