Slow Wireless

Hi - Just got a new PC with Vista and am having trouble with wireless.
Although connection to the net is fine via the ethernet, once I disconnect
the lead, it's incredibly slow ( dial up speed) on wireless ( netgear
wg111v2). Worked fine on old PC with XP.

On the connections, I see that I'm connected to wireless (which is good) but
the moment I access AOL, a connection under dial up / VPN shows named The
internet (2) with a phone logo - also as connected. I'm trying to disconect
from this but system will not let me stating that system is in use. On going
into the control panel - internet properties and connections, it shows this
dial up in the box and does not let me change setting.

Any ideas would be hugely appreciated as my head is hurting from various
wall banging activity :-)

Rhys