I have a home network with 3 wired desktops. One wireless laptop.
One wireless desktop. And two wireless Tivos.

The network has been up and functioning for 4+ years until two weeks
ago when I purchased a new router. Now the laptop and one of the
wired desktops can no longer access the workgroup, although they can
access each other through the network shortcuts. Neither can access
desktop # 2. But desktop #2 can access desktop #1. The last time I
checked desktop #2 could not access the laptop. The error I receive
is the one that states that the workgroup is not accessible. You may
not have permissions, etc.

I'm afraid to turn the other two desktops on, so am unsure of their
contectivity. All three of the PCs in question have access to the
internet, and they print to a printer on a wired print server. The
Tivos can access the internet and each other.

I've attempted to do system restores thinking that just the physical
act of connecting to a new router could have changed a setting. I've
checked the settings on the router (a NetGear MaxRange). The router
shows everything is connected. I've changed the name of each
computer. I've changed the name of the workgroup. For a time the
laptop and destop #1 were able to access the workgroup and each other,
but I got the error on both of them when trying to get to desktop
#2.

I'm about ready to hook the old router back up, but am afraid that
whatever settings have changed will prevent it from working correctly
either.

It is important that I get this resolved. I back a lot of work up
over the network to desktop #2, and right now I have limited to no
access to that PC over the network. I'm also looking at the
possibility of needing surgery in the near future, and would like it
all functioning correctly to make my transition back into work as easy
as possible.

I would appreciate any help. I set the whole thing up originally, but
would call my expertise level at about medium.

Thanks.