I wonder. Perhaps the Router has levels of security options. Some routers do. At the strongest they cannot be used properly for p2p sharing & some online gaming.

Perhaps Content Filtering or wireless settings (setup & advanced) can be checked to see if there is some kind of security level. This 'might' be what the issue is.

ok, i checked both frostwire's listening port number on my laptop and pc, they are both DIFFERENT. BUT, if i do remember correctly, they WERE the same when i installed the router. but i changed my laptops port number when i read somewhere online that some isp's block lower port numbers, or something like that...at any rate, both are different... both are using upnp, and i never download anything from fw when both pc and laptop are on...i'm usually on one or the other...and xbox gaming isn't affected by the new router, i dont know if its xbox or pc gaming...i dont do much pc gaming at all anymore...

any help guys/gals would be GREATLY appreciated

Try deleting FW's preferences folder on one of the computers. To make it easier for you, maybe pick the computer whose FW doesn't have incomplete files that you want to resume.

Before deleting FW's preferences folder, please read post # 5 of this thread (click on link): Fixes for Limewire when LW isn't operating as it should
**Refers to LW but same goes for FW.

Close FW & make sure that it's properly closed before deleting the prefs folder. Check in Task Manager. If there's a FW process running - end the process.

When using Vista or Windows 7, you'll need to look for your preferences folder in a different place. Try C:\Users\your username\AppData\Roaming\FrostWire
And more info about how to show hidden files & folders, and how to find the preferences folder here LimeWire Pref Folder in Vista and Windows 7
**Refers to LW but same goes for FW

You'll know if you've deleted the preferences folder properly...when you start FW, it will take you through the setup wizard. Also, all of the settings within FW's options will have reverted back to default. If you restart FW & don't have to go through the setup wizard, that means that you haven't deleted the preferences folder properly. In that case, make sure that FW's properly closed & start again.

Once you've deleted the prefs folder & restarted FW, give it a while (up to 15 mins) before deciding that the fix hasn't worked.

i just did what you said [deleting preferences] on my pc. i went through the installation wizard again,and restarted FW twice, and still get the brick wall....