jphn12345678,

Make sure that your McAfee firewall is configured properly.
Port Forwarding for the McAfee Security Center

Check the thread below, see if you also have a Windstream firewall.
Cant Connect

Some people have had connection problems when using Java 1.6.0_01. Try this version instead. Use the JRE offline installer & remove your current Java version before installing this one.
Archive: Download Java 2 Platform Standard Edition (J2SE) 5.0 Update 11

Something is blocking LW's default port...possibly your ISP? In LW go tools > options > advanced > firewall config. Change LW's listening port to 64049 (or something in the range of 49152 - 65535) > Apply > ok.

If that doesn't help, delete LW's preferences folder when LW's properly closed. See point 3 here & also point 2 if you've used older versions of LW in the past (there could be a folder in either location).
Fixes for LimeWire
This will kill all of your settings within options, you'll have to go back through afterwards & reset things. If you're not sure of your settings, go through LW's tools > options & write them all down, so that you can reset things later.

You could also try port forwarding for your router. The instructions are here.
Port Forwarding for the Siemens 4200
Don't forget the step of setting up a static IP address first. LW's listening port, port in the 'manual port forward' box & port forwarded within the router all have to be the same number.