i have a benq pb6200, that displays 1080p you can buy it now for about 900$ i paid 1300$...
as for a screen, i have a 135" screen that i paid 300$ for on ebay.
for a screen your gona look at 300-500" for a good one, depending on the size and style you want, you could do a DYI screen, there are pain products out that you can paint directly onto the wall, and this works great for a screen solution, and they come with a black paint to use as a border around the screen, the nice thing about this is, it is much cheeper, and you can make it any specific size you want, you dont have to conform to what some manufacture wants the size to be... or you could build your own screen, these are semi cheep to build also. maby 100$ or so? go over to
dyi screen forum over at avs
http://www.avsforum.com/avs-vb/forumdisplay.php?f=110
hope this helps..