Ok, I've just changed an old decrepit router out for a new one which includes wireless as they need wireless at this location as well as wired CONNECTIONS. I seem to have a problem getting folder/printer sharing to work properly, and it could be a number of THINGS... I just can't seem to work this out...

Ok, here's the setup as it is now:
New Router:
D-Link DIR-300 Wireless G router (4-port router w\ wireless)

Wired:
Port 1: Windows XP, hosting Canon iP3300 USB printer, and a shared storage folder, Comodo Internet Security
Port 2: Windows XP, Avast!, Windows Firewall
Port 3: Windows XP, Avira, Windows Firewall
Port 4: Windows XP, Kaspersky Internet Security

Wireless:
Wireless 1: Windows Vista LAPTOP (see my specs for specifics), Kaspersky Internet Security
Wireless 2: Windows XP laptop, Kaspersky Internet Security

I've done this 100 times, so I'm not sure why it's not working this time. Ok, here's the issues:

1. The shared folder does not appear to any of the other computers. Previously it worked fine.
2. The shared printer only appears to wired computers. Wireless computers can't see the host or the printer on the network. If I plug one of the wireless laptops into a network cable instead, it sees and can print fine.

What I've done so far:
1. Made sure all computers are on the same workgroup (currently called 'FLDM07').
2. Verified that the wireless computers are connected properly to the router.
3. Tried sharing another, different folder. Still, nothing could see it.

Any ideas?

Let me know if there's some more information you need.Aloha Quaxco

You have much more experience than I but I have had the same problem after pulling my hair out I finally realized the system I was working on had Zone
Alarm suite and I had to put each wireless address assigned by DHCP into zone alarms trusted zone and it worked. On other LAN NETWORKS I've had to open ports 67 and 68 and that helped.
I don't know if any of the above will work for you but I hope so.Just throwing it out there for you to consider.Hmm, no Zone Alarm on any of these, but I might check the firewall settings on the host system again just to make sure. Checked it once, but might have missed something.

Think I'll edit my first post and add the AV/Firewall programs just for reference as well.Ah, ok. Problem half solved.

I had forgotten to disable Windows Firewall after I installed Comodo Internet Security on the host system. Since disabling it, wired systems are working just fine. They can use the printer and shared folder.

However, I still can't get wireless systems to see the shared folder or printer at all. When viewing devices connected to the network, I can only see the laptop itself and the router, nothing more.Have you double checked your shares and permissions?Pretty sure I did. I won't be back out there until Thrusday night, so I'll go over it all again then.Okay, let us know.