Hi tonyboy, welcome to WinMxWorld!
First of all you need to make sure your router is set up correctly.
If you got the new community patch the new uPnP feature usually works on netgear routers, so that should be taken care of.
In case you're using an older solution please get the new patch from http://patch.winmxconex.com
If you're still having problems using that you need to make sure that there's nothing else blocking mx, some antivirus tend to do that, also any software firewall you might be using, like the windows one etc...
Please post a few more informations about your local setup if you need more help, knowing what OS you have and which antivirus and firewall etc will help us to help you.
All that being said, it might still just as well be your isp as some tend to block mx or throttle any p2p traffic at certain times etc. but lets make sure everything else is setup correctly first.