After doing more research online it seems there's a chance of there
being a ground even though there's still a 2 prong outlet (I guess this
was sometimes the case in the 50's). I'm going to buy a tester and
determine if this is in fact the case. If this is not the case, I
think I'll trade off and install a GFCI outlet on the first outlet in
the circuit then change the others (in said circuit) with three prong
outlets. Still none would be grounded, but it would still be to code
(or that's the impression I get). Being a first time home buyer, I'm
trying to save where I can and learn as I go. For things like
electrical, before trying to "experiment" I like to get an idea of
what's involved and determine from there.