Thanks for the help guys.
I went to the LBS earlier and talked to them and they suggested Specialized Infinity tires in 700x32. So, I picked up a set and some new 700x28/38 tubes since the ones I had were for 700x20/28.
So, I mounted the tubes/tires on the wheels, but, it seems to be a really tight fit near the valve stem... it seems like the 'boot' on the valve stem is just a wee bit too wide and therefore the tire cant 'seat' all the way in the wheel... maybe i'm just being a perfectionist... but, i dunno... would it be ok to use the 700x20/28 tubes in these tires? Is it because the wheels are a little too narrow for these tubes/tires?
I didn't feel like messing with it anymore, or I would have broke it back down again and used the 700x20/28 tube just to see if the tire fits perfectly... any input?