manage wireless networks

hi all, i have an previous w/l network stored on my laptop, when i changed my router i set up a new network, but when i delete the old one after a sec it reappers, and disconects the new one. i have tryed to untick the property boxes saying connect auto , but no good.pls help

Hi. is the other router still switched on?

Go through the process of setting up a new connection for the new router, doesn't matter if the other one is still present as it should connect to the one available automatically..