Thanks again for all the responses. The consensus appears to be that IQ and Chess Rating don't correlate much, even though most responders here tend to at least appear to be of higher intellect than average, with generally higher ratings to match...
My idea behind this comparison was really to get a sense of whether or not I, with a 120 IQ, could possibly improve past my dopey 1100 rating that I was stuck at for nearly a year before quitting in annoyance. I imagine I could, as many child chess prodigies get a much higher rating than that and surely have fairly low IQs compared to adults, but even so, I have yet to find a way to improve, and am by no means a child NOR a prodigy!
It seems to me, to be brilliant at one thing, one must be equally deficient in an other thing. I've personally known a few people with very high IQs. I witnessed one almost get killed while crossing the street without first looking. But I still feel that having I high IQ can only be an advantage. So long as you look both ways before crossing the street.