This is something that is installed to stop windows interfering or configuring your wireless network.
This sometimes happens when the driver needs to be updated - although the adapter may be new the driver may still need updating.
Go into Device Manager via
Control Panel - System Maintenannce - and scroll down until you see the wireless adapter - click on it to open it up - right click on update driver then reboot.
If this doesn't solve it you could then run CHKDSK which is a utility on vista to check for errors - this article explains how to do it - it can take some time to complete.