Wireless stopped working?

here is what i can determin so far...on the 15th Microsoft did a Security update to how wireless internets are Managed because after that i couldnt get windows to manage my wireless network. also i can connect to the internet via wireless but it is so slow now that i cant do anything with it. i can run a wired connection from the same router fine i can pin websites form either of the two computers on my network...but i can not get either of them to use the wireless connection. i bought a new Router thinking that was the problem but it is having the same problems...Any thoughts?

thanks Chad