VINH,

Suggestion: maybe below your original post you should put a listing down of what you do know in a clear/concise manner, with notes if you'd like. Then folks can easily see what gaps you have and fill them in for you. Or correct you where something is wrong. Like this:

STAR WARS
1982: VHS, "Rental Tape". note: Pan/Scan, 35mm stereo mix
1985: LD, CAV. note: 35mm stereo mix
1985: VHS. note: new digital stero remix.
1989: LD...
1990: VHS, Trilogy box-set

EMPIRE
1984: VHS...
1985: LD...
1989: LD...
1990: VHS, Trilogy box-set

JEDI
1986: VHS...
1990: LD...
1990: VHS, Trilogy box-set

[NOTE: not sure if these are correct...just quickly threw this together]