if its strickly for movies, than do look at projectors, thr no replacement of a 100-150inch screen
do get some good sound system
i wont go for sony panasonic hometheate in a box packages.
go with seperate amplifier and some respectable speakers manufactur, u wont get thr complete range with floor standers and certer speakers, ur have to import them, but thr homethearte on a box packages are avaible, dont know from where, but have seen many at cd dvd shops; specailly klipsch. although they fail to give u mid bass and low bass, but have better overall sound quality, dont buy BOSE, u can also go the custom made speakers way. u live in islamabad, u must have seen ripples ( and illusions as well i guess) in jinnah, thr custom speakers are made by the same person i think whos making a custom setup from drivers of bose acuostimass system, he sell it for around 1.5lac along with yamaha rxv 2400 amplifier which itselff is abt 50K. the benefit of this is u get 6.1 setup all speakers having four drivers , great soundstage and good imaging and excellent clearity, with subwoofer, u beat all those inbox packages, and get a deep down response. its a expensive setup but original bose acoutimass is 1.5lac with out a amplifier or proper subwoofer and each cube has a single driver, its the only worth buying speker from bose
anyways happy theatring