Oh, I'm sorry, also: Disabled all firewalls and antivirus, still no dice. Sorry for leaving that obvious solution out of the list of tried & fails.
I'm generally pretty good at fixing these issues and hope that I'm just missing a basic issue thats right in front of my face. No solutions I've found via various google searches has corrected it.
I have a network consisting of 5 desktops and 1 laptop, all running XP Pro SP3. One desktop is connected directly to the Netgear wireless router/DSL modem. Also wired is a Linksys 8-port switch in another room, where three desktops are wired to this switch. The laptop and one desktop are connected by wireless (though, the issue is with the laptop, and connecting it via cable to the network does not remedy issue).
All of the desktops can see each other, utilize shared folders & printers, etc. However, for whatever reason, the laptop has stopped being able to access any other system (and vice versa). The internet continues to work just fine. Everything was working fine until about 10 days ago, and I cannot think of any system changes that were made. All systems are on the same workgroup.
The error received when trying to access other systems (Start>Run>\\[computername]) is "Network path not found." Attempting to ping the system names in command prompt states that "Ping request could not find host [computername]".
Troubleshooting already completed:
Reboot of all systems (Obviously)
Change computer name/Workgroup and change back.
Create new profile on laptop and attempt to access.
Reinstalled network drivers
Attempt to use wired connection
Netsh Winsock Reset
Repeated yelling, screaming, coaxing, and bribery.