Easy, go to ipchicken.com, record the IP.
Unplug your router, modem, etc for about 30 seconds.
Plug it back in. If your IP hasn't changed, you most likely have a static IP.
Not really. It depends on the modem lease time on some ISP's. For Charter cable in the St. Louis area, I have to unplug my modem and unscrew my coax cable, and leave it like that for at least
4 hours before it will drop the lease & let me gain a new IP. Even if I loose power for 12+ hours, I can still come up with the same IP, even tho I'm listed as 'dymanic' & it does change (occasionally, if bad storms come thru and power drops, or they change some headend hardware, or I get pissed & just disconnect everything overnite.