i wrote a really long reply, and then lost it. i'm discouraged, but will find time later to try to recreate it. believe me, it was brilliant and insightful.

okay. here goes:
there are two ways you can play KQs. you can raise pf, b/c it's a fairly strong hand, with decent top pair possibilities, and strong draw potential. or you can limp with it b/c it's a massive trap hand in nlhe.
i usually raise here, but would limp somewhere between 1/3-1/2 the time (barring other information).
i think either is fine, but you don't want to get them mixed up.
my point:
once you limp (and get a buncha limpers with you), i think you have to realize that top pair isn't very strong. it's dominatable, and easily sucked out on. if you aren't beat on a k or q high flop, it's entirely reasonable that 3 other players would have 5 outs or more each against you. if you limp, you're looking to make a hand like a flush, straight, or some fluky two pair or trips. so i wouldn't, in this situation get too frisky if i flop top pair. i might bet if checked to me, but i'd hate myself for it. i don't know what i'd do if the flop came



and someone bet into me. in the other situation (where i raised pf and got headsup), i'd play aggressively. with 3 players behind me left to act, i'd have to be worried, and i'd consider folding
on the other hand, you can raise pf. this defines your hand as strong (and makes it more likely that you could take down the pot without resistance on the flop pictured above). if you get smoothcalled by AK, or AQ, then you're in trouble, most likely. but this move makes it most likely that you'll get headsup with one player (hopefully the limper in front of you), and puts you in the driver's seat for the hand.
let it be known that this post reflects my understanding of the situation, which is greatly tinted by my experience as a tournament player. i've played about 5x more in tournies, and am about that much more successful in tournies as in cash games. i know the two types of games are different, but oftentimes miss the differences in situations like this. i play scared after the flop if i limp b/c i'm a tourny player. i'm not sure that's right for a cash game, but i don't know it's wrong either

so i've got to go with what i know.
Va, when you post the flop, don't give us what you're thinking. let us talk it out first, and then fill in some details about your thoughts. it'd make it more interesting (IMHO).