Cannot Find NAS On Network

[cwanamaker]

   I connected my NAS to PC #2 via a Gigabit switch with a D-Link DWL-G730AP attached for internet access. I can access the NAS perfectly from PC #2 ... but my other computer (which is connected to the wireless network but not the Gigabit switch) cannot find the NAS ... but it can find PC #2 which is hooked to the switch and my network via the D-Link AP. Any ideas on why I might not be able to see this NAS from behind this other switch?

[Paul]

Try to ping the NAS this will tell you if it is a IP issue or a firewall issue. 

Also disable all of your firewall and antivirus software as well.