Wireless card won't renew IP

I have a pen centra 200 with a Netgear MA701 wireless adapter.
The adapter has worked at two locations previously but now I can't get online from one of the points. The utility says I'm connected but the IP is from the former connection so I cannot access the DNS. It does not seem to update.

Any ideas?

A working MA701, wonders never cease
(Personal gripe with NetGear)

This I imagine is either down to the IP data becoming manually assigned some how, or it is down to an extended DNS lease and both routers being clever on the same subnet.

Download vxUtil:
http://www.hpcfactor.com/qlink/?linkID=36

Check that the thing is still set to dynamic assignment in the control panel. Then have a look in the info view at the DHCP lease data.
It may be worth checking that the second router hasn't run out of space on its subnet / dhcp allocation range.