differences in gm keyless entry??

i want to add a keyless entry to my 2000 v6 firebird. the basic kit is vke 1000 from gm but there are others offered with an alarm also. can anyone tell me the differences in the vss 2000, vss 2200, and the vsc 3000? so far
i've only got the basic descriptions but i want more specs. i also want to know if the 3000 has passive entry like the vette does. hope you guys can help out.
jack
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on never letting the ghost of the sixties reappear. The poor, the weak, minorities, and the left's intelligentsia must not be unsheathed again. (As Todd Gitlin notes in his book The Sixties, on occasion, the Kennedy administration actually had SDS members in the White House to discuss foreign policy issues.) The image of JFK on national television giving hell to the steel companies; of Kennedy staking out his policy for detente at American University; of RFK grilling Sam Giancana and Jimmy Hoffa; of Bobby going through the personnel list at the State Department to be sure there was no Dulles still on the payroll; these images have to be erased. Most of all, the RFK of 1965-68 witgry at the perversion of his brother's policies, must be subverted. Who of the elite would want people to remember RFK saying these words: What the Alliance for Progress has come down to then is that [the native rulers] can close down newspapers, abolish Congress, fail religious opposition, and deport your political enemies, and you'll get
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