Is this a free online pattern that you should give us a link to? It might help us to help you better.
From what you've typed, though, it sounds like you are going to pick up the gusset stitches, just like you would if you were knitting a sock. There is a video on this site
for picking up stitches, just scroll down till you see it. You might also check out Silver's Sock Tutorial
for great info and pictures on how to pick up a sock gusset.
Mommy to two wonderful girls
"I don't have to conform to the vagaries of time and space, I'm a loony!" -Campbell Bain (David Tennant) 'Takin' Over the Asylum'
OTN: Cabled Sweater
, arm warmers, kids' clothes