you will find oodles of 'advice' all over the net. lots of it nonsense, maybe including this...
my advice is with 6 gig ram, you aren't going to need a big swapfile - but make sure you don't disable it completely. saying that, letting windows take care of it is probably best, i think. a lot depends on how you use your pc, what software you run etc - windows probably knows best.
keep it on the same partition as your os - it's not going to be used much anyway, but if it is, lots of head-swapping will occur, just when you don't want it.
you may want to rethink this when your ssd's come back, as gigabytes are expensive. so when they come back, move the swap file over to your traditional drive, so you can leave more space for os and progs on ssd drive.
somebody's bound to disagree though...
who's first?