Check out page 5 of either the October or November issue.
In the lower right corner is some very fine print.
Get a magnifying glass and about at line eleven you'll find,
"SUBSCRIPTION INFORMATION: for subscription customer service, call (800) 673-4595."
Drop down a few more lines and you'll find,
"Change of address: Allow six weeks advance notice and send in both your old and new adresses."
That's the best I can do for ya, Nightcrawler.