Yes, we were able to view the computer details pdf - it just wasn't quite the info that we were looking for

HughesNet might be your problem... other people have had probs in the past. If you use the forum search to look for Hughes, HughesNet, or satellite you'll find quite a few older threads.
Some people have had probs with slow downloads due to the FAP: http://consumer.hughesnet.com/faq/fa...ess-policy.cfm and some people have had connection problems as well. Have you tried connecting/downloading off peak (2 am - 7 am) just to see whether there's any difference?

When you were using basic LW, were you using 5.4.6 or were you using an earlier version?

Your router has UPnP enabled - have you also got 'use UPnP' ticked within LW's options (tools > options > advanced > listening ports)?
And have you changed listening port to something in the range of 49152 - 65535 (as per the 'if LW 5 will not connect' thread)?

Have you removed all LW rules from your Defender Pro firewall settings & then added new ones?
AFAIK Hughes also provide a security suite (including ZoneAlarm firewall)... are you sure that you don't have their security as well as Defender Pro? If it turned out that you did have their security without realising it, you'd need to turn off ZA... 2 firewalls will conflict with each other.

You could also temporarily disable your AV protection & then start up LW - just to see whether that might also be a factor.

Can you connect to your router via ethernet cable & see whether anything changes?

When you deleted LW's preferences folder originally, did all of your settings within LW's options revert to default? People often have probs after either updating to a newer LW or upgrading to Pro. And in those cases, deleting the prefs folder is often the only fix needed. But you need to make sure that the folder's been deleted properly - if options settings don't revert to default after restarting LW then it means that the folder wasn't deleted.

Have you tried another Gnutella client? I think I remember another HughesNet user having heaps of trouble with LW but then Phex worked really well... try either Phex or FrostWire (very similar to LW) & see if you have any luck.
Phex
FrostWire

Or you could try port forwarding for LW if nothing else is working. First you'll need to set up a static IP address (not an address that you get from Hughes - just one that you set up so that your router recognises your computer). The instructions are here: PortForward.com - Free Help Setting up Your Router or Firewall

After setting up a static IP address, you can port forward. Instructions for your router are here: Port Forwarding Limewire on the Dlink WBR-2310
Those instructions are still referring to LW 4 - for your version of LW you'll need to go to LW's tools > options > advanced > listening ports in order to find out which port LW listens on

I wouldn't go disabling NAT - it's there for protection. I think LOTR had a D-Link router at some stage... he might be able to help you more with the UPnP passthrough settings. I'm lost with that.